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What Native-held lands in California can teach about resilience and the future of wildfire

Native-held lands:California’s Native American public domain allotments represent rare opportunities for Indigenous families to reclaim land rights, restore cultural stewardship practices like cultural burning, and help reduce wildfire risk while preserving ecological diversity.

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Native-held lands
Blue oak woodlands in California offer beauty and opportunities to sustain traditional knowledge and ecological resilience.
Nina Fontana, CC BY-NC-ND

What Native-held lands in California can teach about resilience and the future of wildfire

Nina Fontana, University of California, Davis and Beth Rose Middleton Manning, University of California, Davis

It took decades, stacks of legal paperwork and countless phone calls, but, in the spring of 2025, a California Chuckchansi Native American woman and her daughter walked onto a 5-acre parcel of land, shaded by oaks and pines, for the first time.

This land near the foothills of the Sierra National Forest is part of an unusual category of land that has been largely left alone for more than a century. The parcel, like roughly 400 other parcels across the state totaling 16,000 acres in area, is held in trust by the federal government for the benefit of specific Indigenous people – such as a family member of the woman visiting the land with her daughter.

Largely inaccessible for more than a century, and therefore so far of little actual benefit to those it is meant for, this land provides an opportunity for Indigenous people to not only have recognized land rights but also to care for their land in traditional ways that could help reduce the threat of intensifying wildfires as part of a changing climate.

In collaboration with families who have long been connected to this land, our research team at the University of California, Davis is working to clarify ownership records, document ecological conditions and share information to help allottees access and use their allotments.

California’s unique historical situation

As European nations colonized the area that became the United States, they entered into treaties with Native nations. These treaties established tribal reservations and secured some Indigenous rights to resources and land.

Just after California became a state in 1850, the federal government negotiated 18 treaties with 134 tribes, reserving about 7.5 million acres, roughly 7.5% of the state, for tribes’ exclusive use.

However, land speculators and early state politicians considered the land too valuable to give away, so the U.S. Senate refused to ratify the treaties – while allowing the tribes to think they were valid and legally binding. As a result, most California Native Americans were left landless and subject to violent, state-sanctioned removals by incoming miners and settlers.

Then, in 1887, Congress passed the Dawes Act, which allowed Native people across the U.S. to be assigned or apply for land individually. Though it called the seized land – their former tribal homelands – the “public domain,” the Dawes Act presented a significant opportunity for the landless Native people in California to secure land rights that would be recognized by the government.

These land parcels, called allotments, are not private land, public land or reservation land – rather, they are individual parcels held in trust by the federal government for the benefit of allottees and their descendants.

A map of California showing different habitat regions and marking allotments with black dots, next to a chart showing how many acres of allotments are in each type of habitat.
Allotments are in a wide range of ecosystems, though more are in blue oak woodlands than any other single type of habitat.
Images created by James Thorne, Ryan Boynton, Allan Hollander and Dave Waetjan.

Many of these allotments were remote – ecologically rich, yet hard to access. They were carved out of ancestral territories but often lacked access to infrastructure like roads, water or electricity. In some cases, allotments were separated from traditional village sites, ceremonial areas or vital water resources, cutting them off from broader ecosystems and community networks.

Federal officials often drew rough or incorrect maps and even lost track of which parcels had been allotted and to whom, especially as original allottees passed away. As a result, many allotments were claimed and occupied by others, coming into private hands without the full knowledge or consent of the Native families they were held in trust for.

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There were once 2,522 public domain allotments in California totaling 336,409 acres. In 2025, approximately 400 of these allotments remain, encompassing just over 16,000 acres. They are some of the only remaining, legally recognized tracts of land where California Native American families can maintain ties to place, which make them uniquely significant for cultural survival, sovereignty and ecological stewardship.

The allotments today

Because of their remoteness, many of these lands remained relatively undisturbed by human activity and are home to diverse habitats, native plants and traditional gathering places. And because they are held in trust for Native people, they present an opportunity to exercise Indigenous practices of land and resource management, which have sustained people and ecosystems through millennia of climate shifts.

We and our UC Davis research team partner with allottee families; legal advocates including California Indian Legal Services, a Native-led legal nonprofit; and California Public Domain Allottee Association, an allottee-led nonprofit that supports allottees to access and care for their lands. Together, we are studying various aspects of the remaining allotments, including seeking to understand how vulnerable they are to wildfire and drought, and identifying options for managing the land to reduce those vulnerabilities.

A map of California showing different fire risk regions and marking allotments with black dots, alongside a chart showing how many acres of allotments are in different categories of fire risk.
Allotments have a range of fire risk, though many are in very-high-risk areas.
Images created by James Thorne, Ryan Boynton, Allan Hollander and Dave Waetjan.

An opportunity for learning

So far, our surveys of the vegetation on these lands suggest that they could serve as places that sustain both flora and fauna as the climate changes.

Many of these parcels are located in remote, less-developed foothills or steep terrain where they have remained relatively intact, retaining more native species and diverse habitats than surrounding lands. Many of these parcels have elements like oak woodlands, meadows, brooks and rivers that create cooler, wetter areas that help plants and animals endure wildfires or periods of extreme heat or drought.

Allotment lands also offer the potential for the return of stewardship methods that – before European colonization – sustained and improved these lands for generations. For example, Indigenous communities have long used fire to tend plants, reduce overgrowth, restore water tables and generally keep ecosystems healthy.

Guided by Indigenous knowledge and rooted in the specific cultures and ecologies of place, this practice, often called cultural burning, reduces dry materials that could fuel future wildfires, making landscapes more fire-resilient and lowering both ecological and economic damage when wildfires occur. At the same time, it brings back plants for food, medicine, fiber and basketry for California Native communities.

Challenges on allotments

The Chuckchansi family who reached their land for the first time in the spring of 2025 would like to move onto the land. However, the parcel is surrounded by private property, and they need to seek permission from neighboring landowners to even walk onto their own parcel.

In addition, a small number of employees at the Bureau of Indian Affairs are responsible for allotments, and they must also deal with issues on larger reservations and other tribal lands.

Further, because the lands are held in federal trust, allottees’ ability to engage in traditional management practices like cultural burning often face more stringent federal permitting processes than state or private landowners – including restrictions under the Clean Air Act and the National Environmental Policy Act.

To our knowledge, no fire management plans have been approved by the Bureau of Indian Affairs on California Native American public domain allotments. Nonetheless, many families are interested in following traditional practices to manage their land. These efforts were a key topic at the most recent California Public Domain Allottees Conference, which included about 100 participants, including many allottee families.

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A group of people are assembled in a meeting room.
People gather at the second annual California Public Domain Allottees Conference in May 2025.
Nina Fontana, CC BY-NC-ND

Why it matters

As California searches for ideas to help its people adapt to climate change, the allotment lands offer what we believe is a meaningful opportunity to elevate Indigenous leadership in climate adaptation. Indigenous land stewardship strategies have shown they can reduce wildfire risk, restoring ecosystems and sustaining culturally important plants and foods. Though the parcels are small, the practices applied there – such as cultural burning, selective gathering and water stewardship – are often low-cost, community-based and potentially adaptable to larger parcels elsewhere around the state.

One option could be to shift some of the regulatory authority from the Bureau of Indian Affairs to the allottees themselves. Shifting authority to Indigenous peoples has improved forest health elsewhere, as found in a collaborative study between University of California Extension foresters and Hoopa Tribal Forestry. That research found that when the Hoopa Tribe gained control of forestry on their reservation along the Trinity River in northern California, tribal leaders moved toward more restorative forestry practices. They decreased allowable logging amounts, created buffers around streams and protected species that were culturally important, while still reducing the buildup of downed or dead wood that can fuel wildfires.

At a time when California faces record-breaking wildfires and intensifying climate extremes, allotments offer rare pockets of intact habitat with the potential to be managed with cultural knowledge and ecological care. They show that adapting to change is not just about infrastructure or technology, but also about relationships – between people and place, culture and ecology, past and future.

Kristin Ruppel from Montana State University, author of “Unearthing Indian Land, and Jay Petersen from California Indian Legal Services also contributed to the drafting of this article.

Nina Fontana, Researcher in Native American Studies, University of California, Davis and Beth Rose Middleton Manning, Professor of Native American Studies, University of California, Davis

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Sinking Cities: Why Parts of Phoenix—and Much of Urban America—Are Slowly Dropping

Link: https://stmdailynews.com/sinking-cities-why-parts-of-phoenix-and-much-of-urban-america-are-slowly-dropping/

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The Earth

Cement has a climate problem — here’s how geopolymers with add‑ins like cork could help fix it

Portland cement drives ~8% of global emissions. Learn how low-carbon geopolymers—enhanced with add-ins like cork—could cut concrete’s footprint.

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Portland cement, widely used for concrete, is responsible for about 8% of global greenhouse gas emissions. Photovs/iStock/Getty Images Plus

Alcina Johnson Sudagar, Washington University in St. Louis

Concrete is all around you – in the foundation of your home, the bridges you drive over, the sidewalks and buildings of cities. It is often described as the second-most used material by volume on Earth after water.

But the way concrete is made today also makes it a major contributor to climate change.

Portland cement, the key component of concrete, is responsible for about 8% of global greenhouse gas emissions. That’s because it’s made by heating limestone to high temperatures, a process that burns a large amount of fossil fuels for energy and releases carbon dioxide from the limestone in the process.

The good news is that there are alternatives, and they are gaining attention.

Portland cement: A greenhouse gas problem

Cementlike substances have been used in construction for thousands of years. Architects have found evidence of their use in the pyramids of Egypt and the buildings and aqueducts of the Roman Empire.

The Portland cement commonly used in construction today was patented in 1824 by Joseph Aspdin, a British bricklayer.

Modern cement preparation starts with crushing the excavated raw materials limestone and clay and then heating them in a kiln at around 2,650 degrees Fahrenheit (about 1,450 degrees Celsius) to form clinker, a hard, rocklike residue. The clinker is then cooled and ground with gypsum into a fine powder, which is called cement.

About 40% of the carbon dioxide emissions from cement production come from burning fossil fuels to generate the high heat needed to run the kiln. The rest come as the heat converts limestone (calcium carbonate) to lime (calcium oxide), releasing carbon dioxide.

In all, between half a ton and 1 ton of greenhouse gas is released per ton of Portland cement. Cement is a binding agent that, mixed with water, holds aggregate together to create concrete. It makes up about 10% to 15% of the concrete mix by weight.

Alternative technologies can lower emissions

As populations, cities and the need for new infrastructure expand, the use of cement is growing, making it important to find alternatives with lower environmental costs.

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Concrete has seen the fastest growth among commonly used construction materials with rising population between 1950 and 2023
As population has increased, annual global Portland cement production has risen with it. Hao Chen, et al., 2025, CC BY-NC-ND

Some techniques for reducing carbon dioxide emissions include substituting some of the clinker – the hard residue typically made from limestone – with supplementary materials such as clay, or fly ash and slag from industries. Other methods reduce the amount of cement by mixing in waste sawdust or recycled materials like plastics.

The long-term solution for reducing cement’s emissions, however, is to replace traditional cement completely with alternatives. One option is geopolymers made from earthen clay and industrial wastes.

Geopolymers: A more climate-friendly solution

Geopolymers can be made by mixing claylike materials that are rich in aluminum and silicon minerals with a chemical activator through a process called geopolymerization. The activator transforms the silicon and aluminum into a structure that will look like cement. All of this can happen at room temperature.

The major difference between cement and geopolymer is that cement is mainly made of calcium, whereas geopolymers are made of silicon and aluminum with some possible calcium in their structure.

Geopolymers offer advantages with lower number of steps, lower CO2 emission and lower water requirement over Portland cement
How the production of Portland cement and geopolymers compare. Alcina Johnson Sudagar, CC BY-NC

These geopolymers have been found to possess high strength and durability, including resilience in freeze-thaw cycles and resistance to heat and fire, which are important requirements in construction. Studies have found that some geopolymers can provide comparable if not better strength than traditional cement and, because they don’t require heat the way clinker does, they can be produced with significantly lower greenhouse gas emissions.

Geopolymers can also be produced from a variety of raw materials rich in aluminum and silicon, including earthen clays, fly ash, blast furnace slag, rice husk ash, iron ore wastes and recycled construction brick waste. Geopolymer technology can be adapted depending on the clay or industrial waste locally available in a region. https://www.youtube.com/embed/NOj3p6m9M7Q?wmode=transparent&start=0 A brief history of cement and geopolymers. Geopolymer International.

An added advantage of geopolymers is that changes to the mixture can produce a range of features.

For example, I and my co-researchers at the University of Aveiro in Portugal added a small amount of cork industry waste – the leftovers from creating bottle corks – to clay-based geopolymer and found it could improve the strength of the material by up to twofold. The cork particles filled the spaces in the geopolymer structure, making it denser, which increased the strength.

Similarly, additives such as sisal fibers from the agave plant, recycled plastic and steel fibers can change geopolymer properties. The additives do not participate in the geopolymerization process but act as fillers in the structure.

The structure of geopolymers can also be designed to act as adsorbents, attracting toxic metals in wastewater and capturing and storing radioactive wastes. Specifically, incorporating materials like zeolite that are natural adsorbents in the geopolymer structure can make them useful for such applications as well.

Where geopolymers are used now

Geopolymers have been used in many types of construction, including roads, coatings, 3D printing, coastal environmental protection, the steel and chemical industries, sewer rehabilitation and building radiation shielding and rocket launchpad and bunker infrastructure.

One of the earliest examples of a modern geopolymer concrete project was the Brisbane West Wellcamp airport in Australia.

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It was built in 2014 with 70,000 metric tons of geopolymer concrete, which was estimated to have reduced the project’s carbon dioxide emissions by as much as 80%.

The geopolymer market is currently estimated to be between US$7 billion and $10 billion, with the largest growth in the Asia-Pacific region.

Analysts have estimated that the market could grow at a rate of 10% to 20% per year and reach about $62 billion by 2033.

In several countries, greenhouse gas regulations and green-building certifications are expected to support the continued growth of geopolymers in the construction industry.

Expanding the use of cement alternatives

The advantage of using industrial wastes in geopolymers is a double-edged sword, however. The composition of industrial wastes varies, so it can be difficult to standardize the processing methods. The geopolymer components need to be mixed in particular ratios to achieve desired properties.

Producing the activator for the geopolymer, typically done in chemical facilities, can raise the cost and contribute to the carbon footprint. And the long-term data about these materials’ stability is only now being developed given their newness. Also, these geopolymers can take longer to set than cement, though the setting time can be sped up by using raw materials that react quickly.

Developing cheaper, naturally available activators like agricultural waste rice husk with sustainable supply chains could help lower the costs and environmental impact. Also, printing the recipe on the raw material packaging could help simplify the job of determining the mixing ratio so geopolymers can be more widely used with confidence.

Even though geopolymer technology has some drawbacks, these low-carbon alternatives have great potential for reducing emissions from the construction sector.

Alcina Johnson Sudagar, Research Scientist in Chemistry, Washington University in St. Louis

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Science

Sonic booms from meteors can release the energy of hundreds of tons of TNT – here’s how they work

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Sonic booms from meteors can release the energy of hundreds of tons of TNT – here’s how they work
The Chelyabinsk asteroid left a vapor trail as it hit the Earth’s atmosphere in 2013. M. Ahmetvaleev/European Space Agency

Shawn Laatsch, University of Maine

Sonic booms from meteors can release the energy of hundreds of tons of TNT – here’s how they work

As humans, we live out our lives on a planet that is constantly sweeping through a cosmic ocean littered with ancient debris from the formation of the solar system. For the most part, our world glides silently through space, shielded by Earth’s thin atmosphere.

Occasionally, however, the rest of the universe reminds us of its presence with stunning, visceral clarity.

Residents along the Massachusetts–New Hampshire border were startled by a sudden sonic boom on the afternoon of May 30, 2026. A large number of people up and down the Eastern Seaboard witnessed it.

After NASA analyzed imagery from weather satellites, they identified the culprit as a small meteor measuring roughly 3 to 5 feet (1 to 2 meters) across. It was screaming through space at an astonishing 42,000 miles per hour (68,000 kilometers per hour) when it plunged into Earth’s upper atmosphere.

Fragments from a meteor fell into Cape Cod Bay in May 2026.

Friction between the meteor and the increasingly dense air quickly turned the kinetic energy of the rock shooting through the sky into blistering heat. At an altitude of roughly 40 miles (60 kilometers), the immense heat and pressure overcame the structural integrity of the meteor, causing it to fragment in a brilliant flash.

The breakup released a staggering burst of energy equivalent to 300 tons of TNT. When an object travels through the air at speeds faster than sound, which is 761 mph (1,225 kph), it creates a shock wave creating a thunderous clap, or sonic boom. While the majority of the rock vaporized, the remaining fragments rained down harmlessly into the waters of Cape Cod Bay.

In the past, such an event might have passed as an unverified sighting in the daytime sky. Today, however, our planet is wired with an accidental network of planetary defense sensors: dashboard cameras, security systems and digital doorbells.

Because meteor entries like this one last only a few fleeting seconds, they were easily missed in the past. Now, our collective digital eyes capture these spontaneous cosmic intrusions almost instantly, bringing the universe directly into our daily news feeds. While dramatic, these events are more common than most people imagine.

As someone who has worked as a planetarium director and astronomy educator for over four decades, I often get emails, social media messages and phone calls about such objects and sightings. While hearing a sonic boom can be a bit unsettling or even shocking, it reminds us we live in an active universe and may want to occasionally look up instead of down at our devices.

A meteoric spring

The Cape Cod fireball was the latest sighting in an active season of meteoritic arrivals. Just months earlier, the solar system seemed to be sending a parade of rocky objects down to Earth.

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From March 8-11, observers in Northern Europe witnessed large, slow-moving fireballs in their skies. Enthusiasts and scientists successfully recovered several fragments. Lab analysis of these specimens revealed their place in a fascinating lineage – scientists determined that they had originated from Vesta, a massive, pristine asteroid orbiting between Mars and Jupiter.

On March 17, a 7-ton asteroid measuring roughly 6 feet across entered the atmosphere directly over Lake Erie. Traveling at 45,000 mph (72,400 kph), it generated a brilliant daytime flash and a powerful sonic boom, unloading an energy equivalent to 250 tons of TNT. NASA scientists published data about its trajectory, allowing meteorite hunters to recover pristine fragments in Valley City, just a short drive from Cleveland, Ohio.

Only four days later, on March 21, another cosmic fragment blazed across the skies of Texas. This object was about 3 feet wide, and it traveled at 35,000 mph (56,300 kph), releasing the energy of roughly 26 tons of TNT.

Outside of Houston, homeowner Sherri James was startled by a sudden crash, only to discover a 6-inch (15-cm) hole in her roof and a small piece of the solar system resting on her floor.

Thank goodness for Earth’s atmospheric shield

The benchmark for modern atmospheric impacts is the Chelyabinsk meteor, which exploded over Russia on Feb. 15, 2013.

That object was significantly larger than any of the meteors researchers have observed in 2026, measuring 60 feet (18 m) across and weighing roughly 10,000 tons. When it shattered 18 miles (29 km) above the ground, it produced an airburst with an explosive force 30 times greater than the Hiroshima atomic bomb.

A gif of a bright streak moving across the sky and growing brighter towards the end of its journey
The Chelyabinsk meteor, the largest observed in modern history, shoots through the sky in February 2013. Aleksandr Ivanov/Wikimedia Commons, CC BY

The resulting shock wave shattered glass across hundreds of square miles, injuring nearly 1,500 people and registering as a seismic event between 2.7 and 3.7 on the Richter scale. The incident was a stark reminder that while Earth’s atmosphere is an incredibly effective shield, absorbing the lion’s share of cosmic impacts, a large enough kinetic punch can still reach the surface below.

Despite the dramatic stories around these meteor impacts, history shows that the cosmic lottery rarely targets humans directly. In all of recorded history, there is only one universally confirmed case of a person being directly struck by a space rock.

In 1954, an 8.5-pound (3.8 kg) meteorite crashed through the roof of a house in Sylacauga, Alabama, ricocheted off a heavy wooden radio and struck a sleeping woman named Ann Hodges. Though it left a severe bruise on her hip, the radio absorbed the brunt of the impact. Had it not been for the radio, there is a chance she could have been seriously injured or killed by this object.

Living with the cosmos

So, are you in any imminent danger from meteors? The mathematics of the cosmos provide profound reassurance. The statistical odds of being struck by a meteorite are vanishingly small. You stand a better chance of winning a multimillion-dollar lottery jackpot 10 times in a row than ever being hit by a meteorite.

The vast majority of the tons of space debris that bombard Earth daily arrive as harmless dust grains, burning up as elegant meteors or shooting stars. But when the larger pieces do break through and land on our planet, they offer a rare, tangible connection to the beginning of the solar system.

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If you ever happen to witness one of these magnificent fireballs ripping open the sky, consider reporting your observation to the American Meteor Society. The organization keeps track of sightings and falls from around the globe. Recovered fragments provide a way for scientists to gain valuable information about the origin of our solar system, and of our home planet.

Shawn Laatsch, Director of the Versant Power Astronomy Center, University of Maine

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Automotive

The Road to Cleaner Water: How to Prevent Roads from Polluting Waterways

Everyone loves driving on clean highways and spotless local roads. Few people, however, realize the benefits of clean roads go well beyond mere aesthetics. Cleaner roads also mean cleaner and healthier local rivers, lakes and beaches. Follow these simple year-round tips to help make the waters as fun and healthy as possible this summer.

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Everyone loves driving on clean highways and spotless local roads. Few people, however, realize the benefits of clean roads go well beyond mere aesthetics. Cleaner roads also mean cleaner and healthier local rivers, lakes and beaches. Follow these simple year-round tips to help make the waters as fun and healthy as possible this summer.

(Feature Impact) Everyone loves driving on clean highways and spotless local roads. Few people, however, realize the benefits of clean roads go well beyond mere aesthetics. Cleaner roads also mean cleaner and healthier local rivers, lakes and beaches.

That’s because harmful pollutants in local waters often run off untreated from highways and roads during strong storms. Those rains sweep trash, dripped oil, harmful chemicals and even dangerous bacteria from pet waste into local waters via stormways and sewers. This untreated runoff can affect people’s health, make water unsafe for swimming and harm aquatic life. Every year, such man-made “stormwater pollution” even closes portions of recreational rivers and beaches.

It’s up to everyone to help prevent human-caused stormwater pollution. Don’t wait for rain in the forecast to get started. Instead, follow these simple year-round tips from the experts at the California Department of Transportation to help make the cooling waters in California and beyond as fun and healthy as possible this summer.

Trash-Free Trips and Responsible Car Care

Summer can mean more road time traveling to your next adventure. Loose items in truck beds and on roof carriers or trash tossed from car windows can quickly become the next wave of stormwater pollution flowing into local waters. To reduce:

  • Secure Your Load: Always securely tarp and tie down anything in a truck bed or on a roof rack. Items falling off vehicles are both a safety hazard and can become roadside debris.
  • Keep a Car Trash Catcher: Designate a bag or container in your car for food wrappers, coffee cups and other small trash until you can dispose of it properly.
  • Wash Smart: Commercial car washes that recycle water are superior for preventing road dirt and chemicals accumulated on your car from entering storm drains compared to washing in a driveway. If washing at home, do it on your lawn or a permeable surface where the water naturally filters into the ground and not street gutters.
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Outdoor Adventures That Leave Only Footprints

Whether you’re hiking a mountain trail, picnicking at the park or relaxing on the beach, remember the outdoor golden rule: pack out everything you pack in. Food wrappers, plastic bottles and even seemingly small items like bottle caps and cigarette butts are some of the most common litter found in parks, waterways and along coastlines. When left behind, they’re not just eyesores; they’re prime candidates for being washed into waterways.

  • Pro Tip: Choose reusable water bottles that clip onto bags to reduce pollution from discarded plastic bottles.

At Home and In Your Neighborhood



Even close to home, your actions can make a difference.

  • Garden Care: When tidying up your garden or front lawn, sweep leaves and grass clippings into your green bin instead of hosing them down the driveway. Hosing yard waste into road gutters can clog storm drains and cause flooding.
  • Pesticide Prevention: To protect waterways from harmful chemical runoff, opt for organic or eco-friendly alternatives for pest and weed control whenever possible.
  • Scoop the Poop: Pet waste contains harmful bacteria that can contaminate waterways. In fact, the EPA estimates that just two days’ worth of waste from 100 dogs can produce enough bacteria to close a beach. Always pick up after your pets, especially when walking in your neighborhood or parks, and dispose of it in a trash bin.

Pollution in waterways doesn’t just look bad; it creates real problems, from harming wildlife and ecosystems to causing potential health issues for humans and pets who encounter contaminated water. The cleaner roads and surrounding areas are, the healthier rivers, lakes and beaches become. For more tips and resources, visit CleanWaterCA.com to ensure a clean, healthy summer for everyone.

Photos courtesy of Shutterstock collect?v=1&tid=UA 482330 7&cid=1955551e 1975 5e52 0cdb 8516071094cd&sc=start&t=pageview&dl=http%3A%2F%2Ftrack.familyfeatures track

SOURCE:
California Department of Transportation

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