Gabriel Eckstein, Texas A&M University and Rosario Sanchez, Texas A&M University

Immigration and border security will be the likely focus of U.S.-Mexico relations under the new Trump administration. But there also is a growing water crisis along the U.S.–Mexico border that affects tens of millions of people on both sides, and it can only be managed if the two governments work together.

Climate change is shrinking surface and groundwater supplies in the southwestern U.S. Higher air temperatures are increasing evaporation rates from rivers and streams and intensifying drought. Mexico is also experiencing multiyear droughts and heat waves.

Growing water use is already overtaxing limited supplies from nearly all of the region’s cross-border rivers, streams and aquifers. Many of these sources are contaminated with agricultural pollutants, untreated waste and other substances, further reducing the usability of available water.

As Texas-based scholars who study the legal and scientific aspects of water policy, we know that communities, farms and businesses in both countries rely on these scarce water supplies. In our view, water conditions on the border have changed so much that the current legal framework for managing them is inadequate.

Unless both nations recognize this fact, we believe that water problems in the region are likely to worsen, and supplies may never recover to levels seen as recently as the 1950s. Although the U.S. and Mexico have moved to address these concerns by updating the 1944 water treaty, these steps are not long-term solutions.

Growing demand, shrinking supply

The U.S.-Mexico border region is mostly arid, with water coming from a few rivers and an unknown amount of groundwater. The main rivers that cross the border are the Colorado and the Rio Grande – two of the most water-stressed systems in the world.

The Colorado River provides water to more than 44 million people, including seven U.S. and two Mexican states, 29 Indian tribes and 5.5 million acres of farmland. Only about 10% of its total flow reaches Mexico. The river once emptied into the Gulf of California, but now so much water is withdrawn along its course that since the 1960s it typically peters out in the desert.

The Rio Grande supplies water to roughly 15 million people, including 22 Indian tribes, three U.S. and four Mexican states and 2.8 million irrigated acres. It forms the 1,250-mile (2,000-kilometer) Texas-Mexico border, winding from El Paso in the west to the Gulf of Mexico in the east.

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Other rivers that cross the border include the Tijuana, San Pedro, Santa Cruz, New and Gila. These are all significantly smaller and have less economic impact than the Colorado and the Rio Grande.

At least 28 aquifers – underground rock formations that contain water – also traverse the border. With a few exceptions, very little information on these shared resources exists. One thing that is known is that many of them are severely overtapped and contaminated.

Nonetheless, reliance on aquifers is growing as surface water supplies dwindle. Some 80% of groundwater used in the border region goes to agriculture. The rest is used by farmers and industries, such as automotive and appliance manufacturers.

Over 10 million people in 30 cities and communities throughout the border region rely on groundwater for domestic use. Many communities, including Ciudad Juarez; the sister cities of Nogales in both Arizona and Sonora; and the sister cities of Columbus in New Mexico and Puerto Palomas in Chihuahua, get all or most of their fresh water from these aquifers.

A booming region

About 30 million people live within 100 miles (160 kilometers) of the border on both sides. Over the next 30 years, that figure is expected to double.

Municipal and industrial water use throughout the region is also expected to increase. In Texas’ lower Rio Grande Valley, municipal use alone could more than double by 2040.

At the same time, as climate change continues to worsen, scientists project that snowmelt will decrease and evaporation rates will increase. The Colorado River’s baseflow – the portion of its volume that comes from groundwater, rather than from rain and snow – may decline by nearly 30% in the next 30 years.

Precipitation patterns across the region are projected to be uncertain and erratic for the foreseeable future. This trend will fuel more extreme weather events, such as droughts and floods, which could cause widespread harm to crops, industrial activity, human health and the environment.

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Further stress comes from growth and development. Both the Colorado River and Rio Grande are tainted by pollutants from agricultural, municipal and industrial sources. Cities on both sides of the border, especially on the Mexican side, have a long history of dumping untreated sewage into the Rio Grande. Of the 55 water treatment plants located along the border, 80% reported ongoing maintenance, capacity and operating problems as of 2019.

Drought across the border region is already stoking domestic and bilateral tensions. Competing water users are struggling to meet their needs, and the U.S. and Mexico are straining to comply with treaty obligations for sharing water.

Cross-border water politics

Mexico and the United States manage water allocations in the border region mainly under two treaties: a 1906 agreement focused on the Upper Rio Grande Basin and a 1944 treaty covering the Colorado River and Lower Rio Grande.

Under the 1906 treaty, the U.S. is obligated to deliver 60,000 acre-feet of water to Mexico where the Rio Grande reaches the border. This target may be reduced during droughts, which have occurred frequently in recent decades. An acre-foot is enough water to flood an acre of land 1 foot deep – about 325,000 gallons (1.2 million liters).

Allocations under the 1944 treaty are more complicated. The U.S. is required to deliver 1.5 million acre-feet of Colorado River water to Mexico at the border – but as with the 1906 treaty, reductions are allowed in cases of extraordinary drought.

Until the mid-2010s, the U.S. met its full obligation each year. Since then, however, regional drought and climate change have severely reduced the Colorado River’s flow, requiring substantial allocation reductions for both the U.S. and Mexico.

In 2025, states in the U.S. section of the lower Colorado River basin will see a reduction of over 1 million acre-feet from prior years. Mexico’s allocation will decline by approximately 280,500 acre-feet under the 1944 treaty.

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This agreement provides each nation with designated fractions of flows from the Lower Rio Grande and specific tributaries. Regardless of water availability or climatic conditions, Mexico also is required to deliver to the U.S. a minimum of 1,750,000 acre-feet of water from six named tributaries, averaged over five-year cycles. If Mexico falls short in one cycle, it can make up the deficit in the next five-year cycle, but cannot delay repayment further. https://www.youtube.com/embed/IgWSMgg9TmE?wmode=transparent&start=0 The U.S. and Mexico are struggling to share a shrinking water supply in the border region.

Since the 1990s, extraordinary droughts have caused Mexico to miss its delivery obligations three times. Although Mexico repaid its water debts in subsequent cycles, these shortfalls raised diplomatic tensions that led to last-minute negotiations and large-scale water transfers from Mexico to the U.S.

Mexican farmers in Lower Rio Grande irrigation districts who had to shoulder these cuts felt betrayed. In 2020, they protested, confronting federal soldiers and temporarily seizing control of a dam.

U.S. President Donald Trump and Mexican President Claudia Scheinbaum clearly appreciate the political and economic importance of the border region. But if water scarcity worsens, it could supplant other border priorities.

In our view, the best way to prevent this would be for the two countries to recognize that conditions are deteriorating and update the existing cross-border governance regime so that it reflects today’s new water realities.

Gabriel Eckstein, Professor of Law, Texas A&M University and Rosario Sanchez, Senior Research Scientist, Texas Water Resources Institute, Texas A&M University

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

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Gemma Ware, The Conversation

Quantum computers have the potential to solve big scientific problems that are beyond the reach of today’s most powerful supercomputers, such as discovering new antibiotics or developing new materials.

But to achieve these breakthroughs, quantum computers will need to perform better than today’s best classical computers at solving real-world problems. And they’re not quite there yet. So what is still holding quantum computing back from becoming useful?

In this episode of The Conversation Weekly podcast, we speak to quantum computing expert Daniel Lidar at the University of Southern California in the US about what problems scientists are still wrestling with when it comes to scaling up quantum computing, and how close they are to overcoming them.

https://cdn.theconversation.com/infographics/561/4fbbd099d631750693d02bac632430b71b37cd5f/site/index.html

Quantum computers harness the power of quantum mechanics, the laws that govern subatomic particles. Instead of the classical bits of information used by microchips inside traditional computers, which are either a 0 or a 1, the chips in quantum computers use qubits, which can be both 0 and 1 at the same time or anywhere in between. Daniel Lidar explains:

“Put a lot of these qubits together and all of a sudden you have a computer that can simultaneously represent many, many different possibilities …  and that is the starting point for the speed up that we can get from quantum computing.”

Faulty qubits

One of the biggest problems scientist face is how to scale up quantum computing power. Qubits are notoriously prone to errors – which means that they can quickly revert to being either a 0 or a 1, and so lose their advantage over classical computers.

Scientists have focused on trying to solve these errors through the concept of redundancy – linking strings of physical qubits together into what’s called a “logical qubit” to try and maximise the number of steps in a computation. And, little by little, they’re getting there.

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In December 2024, Google announced that its new quantum chip, Willow, had demonstrated what’s called “beyond breakeven”, when its logical qubits worked better than the constituent parts and even kept on improving as it scaled up.

Lidar says right now the development of this technology is happening very fast:

“For quantum computing to scale and to take off is going to still take some real science breakthroughs, some real engineering breakthroughs, and probably overcoming some yet unforeseen surprises before we get to the point of true quantum utility. With that caution in mind, I think it’s still very fair to say that we are going to see truly functional, practical quantum computers kicking into gear, helping us solve real-life problems, within the next decade or so.”

Listen to Lidar explain more about how quantum computers and quantum error correction works on The Conversation Weekly podcast.

This episode of The Conversation Weekly was written and produced by Gemma Ware with assistance from Katie Flood and Mend Mariwany. Sound design was by Michelle Macklem, and theme music by Neeta Sarl.

Clips in this episode from Google Quantum AI and 10 Hours Channel.

You can find us on Instagram at theconversationdotcom or via e-mail. You can also subscribe to The Conversation’s free daily e-mail here.

Listen to The Conversation Weekly via any of the apps listed above, download it directly via our RSS feed or find out how else to listen here.

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Gemma Ware, Host, The Conversation Weekly Podcast, The Conversation

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

In an exciting opportunity for young minds, NASA is bringing the wonders of space exploration directly to a New Jersey classroom. Students from the Thomas Edison EnergySmart Charter School in Somerset, New Jersey, will have the unique chance to connect with NASA astronaut Nick Hague aboard the International Space Station (ISS). During a 20-minute space-to-Earth call, Hague will answer prerecorded questions from students, focusing on science, technology, engineering, and mathematics (STEM) topics.

The event, scheduled for 11:10 a.m. EST on Tuesday, February 11, will be broadcast live on NASA+, NASA’s streaming platform. This interactive session promises to inspire the next generation of explorers and highlight the importance of STEM education in shaping the future of space exploration.

How to Watch

The live Q&A session will be available to the public, offering a rare glimpse into life aboard the ISS and the work being done to advance human knowledge and capabilities in space. Viewers can tune in via NASA+ or follow NASA’s social media channels for updates and streaming options. For those unable to watch live, the event will likely be archived for later viewing.

Media Coverage

Media representatives interested in covering this event must RSVP by 5 p.m. EST on Thursday, February 6, to Jeanette Allison at [email protected] or 732-412-7643. This is a fantastic opportunity to showcase how NASA is engaging with students and fostering interest in STEM fields.

The International Space Station: A Hub of Innovation

For over 24 years, astronauts have continuously lived and worked aboard the ISS, conducting groundbreaking research and testing technologies that benefit life on Earth and pave the way for future exploration. The station serves as a microgravity laboratory where astronauts perform experiments in fields such as biology, physics, and materials science, while also developing the skills needed for missions to the Moon, Mars, and beyond.

Communication between the ISS and Earth is made possible through NASA’s Space Communications and Navigation (SCaN) program, specifically the Near Space Network, which ensures 24/7 connectivity with Mission Control in Houston. This seamless communication allows astronauts like Nick Hague to share their experiences and insights with audiences worldwide, including students eager to learn about space.

Inspiring the Artemis Generation

This event is part of NASA’s broader efforts to inspire the Artemis Generation—the next wave of explorers who will carry humanity’s mission of discovery forward. Through the Artemis program, NASA aims to return astronauts to the Moon and prepare for future human exploration of Mars. By engaging with students and educators, the agency hopes to ignite curiosity and passion for STEM, ensuring the United States remains a leader in space exploration and innovation.

A Lifelong Impact

For the students at Thomas Edison EnergySmart Charter School, this Q&A session is more than just a chance to ask questions—it’s an opportunity to dream big and see themselves as part of humanity’s journey into the cosmos. By connecting with an astronaut in real-time, they’ll gain a deeper understanding of the challenges and rewards of space exploration, as well as the critical role STEM plays in solving the problems of tomorrow.

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Don’t miss this inspiring event! Tune in on February 11 to witness the magic of space come alive in a New Jersey classroom.

For more information about NASA’s missions, educational initiatives, and streaming options, visit NASA’s official website.

What are your thoughts on NASA’s efforts to engage students in STEM? Share your comments below!