Is Mars really as red as people say it is? – Jasmine, age 14, Everson, Washington
People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often been called the red planet. The English name for the planet comes from the Romans, who named it after their god of war because its color reminded them of blood. In reality, the reddish color of Mars comes from iron oxide in the rocks and dust covering its surface. Your blood is also red because of a mixture of iron and oxygen in a molecule called hemoglobin. So in a way, the ancient connection between the planet Mars and blood wasn’t completely wrong. Rust, which is a common form of iron oxide found here on Earth, also often has a reddish color.Iron oxide, found in rust on old metal machinery, is the compound that colors rocks and dust on Mars’ surface reddish brown.Lars Hammar/Flickr, CC BY-NC-SAIn my current research on exoplanets, I observe different types of signals from planets beyond Earth. Lots of interesting physics goes into how researchers perceive the colors of planets and stars through different types of telescopes.
Observing Mars with probes
If you look closely at pictures of Mars taken by rovers on its surface, you can see that most of the planet isn’t purely red, but more of a rusty brown or tan color.You can see Mars’ rusty color in this photo taken by the Viking lander.NASA/JPL Probes sent from Earth have taken pictures showing rocks with a rusty color. A 1976 picture from the Viking lander, the very first spacecraft to land on Mars, shows the Martian ground covered with a layer of rusty orange dust. Not all of Mars’ surface has the same color. At the poles, its ice caps appear white. These ice caps contain frozen water, like the ice we usually find on Earth, but these ice caps are also covered by a layer of frozen carbon dioxide – dry ice. This layer of dry ice can evaporate very quickly when sunlight shines on it and grows back again when it becomes dark. This process causes the white ice caps to grow and shrink in size depending on the Martian seasons.This picture from the Hubble Space Telescope shows the planet with the same rusty color covering large parts of its surface.NASA, ESA, Zolt G. Levay (STScI)
Beyond visible light
Mars also gives off light in colors that you can’t see with your eyes but that scientists can measure with special cameras on telescopes. Light itself can be thought of not only as a wave but also as a stream of particles called photons. The amount of energy carried by each photon is related to its color. For example, blue and violet photons have more energy than orange and red photons.The rainbow of visible light that you can see is only a small slice of all the kinds of light. Some telescopes can detect light with a longer wavelength, such as infrared light, or light with a shorter wavelength, such as ultraviolet light. Others can detect X-rays or radio waves.Inductiveload, NASA/Wikimedia Commons, CC BY-SAUltraviolet photons have even more energy than the photons you can see with your eyes. These photons are found in direct sunlight, and because they have so much energy, they can damage the cells in your body. You can use sunscreen to protect yourself from them. Infrared photons have less energy than the photons you can see with your eyes, and you don’t need any special protection from them. This is how some types of night-vision goggles work: They can see light in the infrared spectrum as well as the visible color spectrum. Scientists can take pictures of Mars in the infrared spectrum using special cameras that work almost like night-vision goggles for telescopes.The Hubble Space Telescope could take pictures in both visible light and infrared light.NASA, James Bell (Cornell University), Justin Maki (NASA-JPL), Mike J. Wolff (SSI) The colors on the infrared picture aren’t really what the infrared light looks like, because you can’t see those colors with your eyes. They are called “false colors,” and researchers add them to look at the picture more easily. When you compare the visible color picture and the infrared picture, you can see some of the same features – and the ice caps are visible in both sets of colors.A UV view of Mars with the MAVEN spacecraft.NASA/LASP/CU Boulder NASA’s MAVEN spacecraft, launched in 2013, has even taken pictures with ultraviolet light, giving scientists a different view of both the surface of Mars and its atmosphere. Each new type of picture tells scientists more about the Martian landscape. They hope to use these details to answer questions about how Mars formed, how long it had active volcanoes, where its atmosphere came from and whether it had liquid water on its surface. Astronomers are always looking for new ways to take telescope pictures outside of the regular visible spectrum. They can even make images using radio waves, microwaves, X-rays and gamma rays. Each part of the spectrum they can use to look at an object in space represents new information they can learn from. Even though people have been looking at Mars since ancient times, we still have much to learn about this fascinating neighbor.Hello, curious kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to CuriousKidsUS@theconversation.com. Please tell us your name, age and the city where you live.And since curiosity has no age limit – adults, let us know what you’re wondering, too. We won’t be able to answer every question, but we will do our best.David Joffe, Associate Professor of Physics, Kennesaw State University This article is republished from The Conversation under a Creative Commons license. Read the original article.
Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter. https://stmdailynews.com/the-knowledge/
Glad and Oscar the Grouch Team Up for a Trashy, Toe-Tapping Campaign
Glad teams up with Oscar the Grouch for a playful revival of the “Don’t Get Mad. Get Glad.” campaign, featuring a musical number, limited-edition Oscar-inspired trash bags, and a fresh take on making trash day fun for all ages.
Glad revives its most popular, decades-long, star-studded ad campaign, “Don’t Get Mad. Get Glad.”
What happens when the world’s most iconic grouch meets the nation’s go-to name in trash bags? You get a campaign that’s equal parts nostalgia, Broadway-style fun, and a reminder that even trash can bring a little joy to your day.
A Classic Campaign Gets a Grouchy Remix
Glad has officially revived its legendary “Don’t Get Mad. Get Glad.” campaign, but this time, they’re ditching the usual celebrity faces for a true original: Oscar the Grouch. For the first time, the campaign’s star is none other than Sesame Street’s resident trash enthusiast himself, and he’s bringing his signature tune “I Love Trash” back with a contemporary twist.
The musical number, directed by the award-winning duo Will Speck and Josh Gordon, opens with Oscar in his element—surrounded by trash and a little bit of grumpiness. But the real magic happens when Oscar imagines a world where everyone else shares his passion for trash. The result? A joyful, Broadway-inspired remix that transforms everyday frustration into a celebration of Glad’s dependable trash solutions.
Why Oscar? Why Now?
According to Glad’s Marketing Director, Kellie Li, the choice was simple: “No one feels more strongly about trash than Oscar the Grouch.” The campaign aims to flip the script on how we think about trash—turning a dreaded chore into something a little more lighthearted. With Glad’s reliable bags, there’s less to get mad about, and maybe, just maybe, a little more to sing about.
Nostalgia Meets New Audiences
If “Don’t Get Mad. Get Glad.” sounds familiar, you’re not imagining things. The campaign has been a staple since 1987, featuring everyone from TV stars to athletes. But this new chapter, featuring Oscar and a cast of trash-loving co-stars, is designed to connect with both longtime fans and a new generation discovering Sesame Street on Netflix and PBS KIDS.
Limited-Edition Oscar Goodies and Where to Find Them
To celebrate the campaign, Glad is releasing limited-edition Oscar-inspired trash bag totes—complete with green fur, of course. Fans can snag these playful bags through a social media giveaway this December (follow @gladproducts on Instagram and TikTok for details). And if you miss out, don’t worry: special Oscar-branded Glad ForceFlex with Gain bags will hit Walmart shelves this April, just in time for spring cleaning.
Where to Watch
The campaign is rolling out across the U.S. and Canada, with full-length videos, bite-sized social teasers, and everything in between. Look for it on TikTok, Instagram, Facebook, and Reddit (for our friends up north). Featured products include Glad ForceFlex with Gain and Glad Cherry Blossom.
Glad revives its most popular, decades-long, star-studded ad campaign, “Don’t Get Mad. Get Glad.”
Glad revives its most popular, decades-long, star-studded ad campaign, “Don’t Get Mad. Get Glad.”
Bringing the Campaign Home: Phoenix Community Clean-Up
Here in Phoenix, we know the value of coming together to keep our neighborhoods clean and vibrant. Glad’s collaboration with Oscar the Grouch isn’t just a fun national campaign—it’s a reminder that tackling trash can be a community effort, too.
With spring cleaning right around the corner and special Oscar-branded Glad bags hitting Walmart shelves this April, it’s the perfect time for local groups, schools, and neighbors to organize clean-up events across the Valley. Whether you’re sprucing up a park, refreshing a neighborhood, or just making your own block a little brighter, every bag makes a difference.
Ready to join the movement? Rally your friends, family, or local organization and plan a Phoenix clean-up day this spring. Snap a photo of your crew with your Glad or Oscar-inspired trash bags and share it on social media using #GladToCleanPHX and #OscarLovesTrash. Let’s show how Phoenix turns trash day into a reason to celebrate!
“Phoenix, let’s get grouchy about litter and Glad about clean streets! Join our community clean-up and share your photos with #GladToCleanPHX.”
“Spotted: Oscar the Grouch in Phoenix! Grab your Glad bags, clean up your neighborhood, and tag #OscarLovesTrash for a chance to be featured.”
“Spring cleaning in Phoenix just got a lot more fun—thanks to Glad and Oscar! Who’s joining our next clean-up day? #GladToCleanPHX”
About the Brands
Glad, a member of The Clorox Company, has long been a leader in household waste solutions, while Sesame Workshop continues to inspire and educate families worldwide. This collaboration is a perfect blend of dependable products and beloved characters—reminding us all that even the messiest moments can spark a little joy.
The collaboration between Glad and Sesame Workshop for the “Don’t Get Mad. Get Glad.” campaign marks a creative partnership that blends household dependability with beloved children’s entertainment. By bringing Oscar the Grouch into the spotlight, Glad not only revives a classic campaign but also highlights the importance of making everyday chores more enjoyable for families. This partnership leverages Glad’s reputation as the nation’s leading provider of kitchen and outdoor trash bags and food protection products—trusted solutions designed to handle life’s messes with ease (Glad.com). Sesame Workshop, the nonprofit behind Sesame Street, has spent over 50 years enriching families worldwide through educational media and community outreach, helping children grow smarter, stronger, and kinder (Sesame.org). Together, their collaboration aims to inspire a new generation to see the positive side of cleaning up, all while celebrating the joy of community and play.
More than half of new articles on the internet are being written by AI – is human writing headed for extinction?
A new study finds over 50% of online articles are now AI-generated, raising questions about the future of human writing. Discover why formulaic content is most at risk, and why authentic, creative voices may become more valuable than ever.
Preserving the value of real human voices will likely depend on how people adapt to artificial intelligence and collaborate with it. BlackJack3D/E+ via Getty Images
More than half of new articles on the internet are being written by AI – is human writing headed for extinction?
Francesco Agnellini, Binghamton University, State University of New York The line between human and machine authorship is blurring, particularly as it’s become increasingly difficult to tell whether something was written by a person or AI. Now, in what may seem like a tipping point, the digital marketing firm Graphite recently published a study showing that more than 50% of articles on the web are being generated by artificial intelligence. As a scholar who explores how AI is built, how people are using it in their everyday lives, and how it’s affecting culture, I’ve thought a lot about what this technology can do and where it falls short. If you’re more likely to read something written by AI than by a human on the internet, is it only a matter of time before human writing becomes obsolete? Or is this simply another technological development that humans will adapt to?
It isn’t all or nothing
Thinking about these questions reminded me of Umberto Eco’s essay “Apocalyptic and Integrated,” which was originally written in the early 1960s. Parts of it were later included in an anthology titled “Apocalypse Postponed,” which I first read as a college student in Italy. In it, Eco draws a contrast between two attitudes toward mass media. There are the “apocalyptics” who fear cultural degradation and moral collapse. Then there are the “integrated” who champion new media technologies as a democratizing force for culture.Italian philosopher, cultural critic and novelist Umberto Eco cautioned against overreacting to the impact of new technologies.Leonardo Cendamo/Getty Images Back then, Eco was writing about the proliferation of TV and radio. Today, you’ll often see similar reactions to AI. Yet Eco argued that both positions were too extreme. It isn’t helpful, he wrote, to see new media as either a dire threat or a miracle. Instead, he urged readers to look at how people and communities use these new tools, what risks and opportunities they create, and how they shape – and sometimes reinforce – power structures. While I was teaching a course on deepfakes during the 2024 election, Eco’s lesson also came back to me. Those were days when some scholars and media outlets were regularly warning of an imminent “deepfake apocalypse.” Would deepfakes be used to mimic major political figures and push targeted disinformation? What if, on the eve of an election, generative AI was used to mimic the voice of a candidate on a robocall telling voters to stay home? Those fears weren’t groundless: Research shows that people aren’t especially good at identifying deepfakes. At the same time, they consistently overestimate their ability to do so. In the end, though, the apocalypse was postponed. Post-election analyses found that deepfakes did seem to intensify some ongoing political trends, such as the erosion of trust and polarization, but there’s no evidence that they affected the final outcome of the election.
Listicles, news updates and how-to guides
Of course, the fears that AI raises for supporters of democracy are not the same as those it creates for writers and artists. For them, the core concerns are about authorship: How can one person compete with a system trained on millions of voices that can produce text at hyper-speed? And if this becomes the norm, what will it do to creative work, both as an occupation and as a source of meaning? It’s important to clarify what’s meant by “online content,” the phrase used in the Graphite study, which analyzed over 65,000 randomly selected articles of at least 100 words on the web. These can include anything from peer-reviewed research to promotional copy for miracle supplements. A closer reading of the Graphite study shows that the AI-generated articles consist largely of general-interest writing: news updates, how-to guides, lifestyle posts, reviews and product explainers. https://stmdailynews.com/wp-admin/post-new.php#visibility The primary economic purpose of this content is to persuade or inform, not to express originality or creativity. Put differently, AI appears to be most useful when the writing in question is low-stakes and formulaic: the weekend-in-Rome listicle, the standard cover letter, the text produced to market a business. A whole industry of writers – mostly freelance, including many translators – has relied on precisely this kind of work, producing blog posts, how-to material, search engine optimization text and social media copy. The rapid adoption of large language models has already displaced many of the gigs that once sustained them.
Collaborating with AI
The dramatic loss of this work points toward another issue raised by the Graphite study: the question of authenticity, not only in identifying who or what produced a text, but also in understanding the value that humans attach to creative activity. How can you distinguish a human-written article from a machine-generated one? And does that ability even matter? Over time, that distinction is likely to grow less significant, particularly as more writing emerges from interactions between humans and AI. A writer might draft a few lines, let an AI expand them and then reshape that output into the final text. This article is no exception. As a non-native English speaker, I often rely on AI to refine my language before sending drafts to an editor. At times the system attempts to reshape what I mean. But once its stylistic tendencies become familiar, it becomes possible to avoid them and maintain a personal tone. Also, artificial intelligence is not entirely artificial, since it is trained on human-made material. It’s worth noting that even before AI, human writing has never been entirely human, either. Every technology, from parchment and stylus paper to the typewriter and now AI, has shaped how people write and how readers make sense of it. Another important point: AI models are increasingly trained on datasets that include not only human writing but also AI-generated and human–AI co-produced text. This has raised concerns about their ability to continue improving over time. Some commentators have already described a sense of disillusionment following the release of newer large models, with companies struggling to deliver on their promises.
Human voices may matter even more
But what happens when people become overly reliant on AI in their writing? Some studies show that writers may feel more creative when they use artificial intelligence for brainstorming, yet the range of ideas often becomes narrower. This uniformity affects style as well: These systems tend to pull users toward similar patterns of wording, which reduces the differences that usually mark an individual voice. Researchers also note a shift toward Western – and especially English-speaking – norms in the writing of people from other cultures, raising concerns about a new form of AI colonialism. In this context, texts that display originality, voice and stylistic intention are likely to become even more meaningful within the media landscape, and they may play a crucial role in training the next generations of models. If you set aside the more apocalyptic scenarios and assume that AI will continue to advance – perhaps at a slower pace than in the recent past – it’s quite possible that thoughtful, original, human-generated writing will become even more valuable. Put another way: The work of writers, journalists and intellectuals will not become superfluous simply because much of the web is no longer written by humans. Francesco Agnellini, Lecturer in Digital and Data Studies, Binghamton University, State University of New York This article is republished from The Conversation under a Creative Commons license. Read the original article.
Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter. https://stmdailynews.com/the-knowledge/
Why Medieval Christians Loved Stories of Jesus as a Holy ‘Rascal’—Beyond the Bible’s Silence on His Childhood
The Bible says little about Jesus’ early years, but medieval Christians enjoyed vivid tales of his childhood as a wonder-working, mischievous “holy rascal.” Discover how apocryphal stories and art filled in the gaps, shaping Christmas traditions and popular imagination.
The Bible says little about Jesus’ childhood – but that didn’t stop medieval Christians from enjoying tales of him as holy ‘rascal’
Mary Dzon, University of Tennessee Manger scenes displayed around Christmastime usually feature an ox and an ass beside the infant Jesus. According to the Gospel of Luke, Mary placed her child in a manger – an animal feeding bin – “because there was no room for them in the inn.” No mere babysitters, the ox and ass harken back to the Book of Isaiah 1:3, a verse early Christians interpreted as a prophecy of the birth of Christ. In some early artwork, these beasts of burden kneel to show their reverence – recognizing this swaddled babe, who entered the world in humble circumstances, as lordly. The canonical Gospels, the accounts of Jesus’ life included in the Bible’s New Testament, make no mention of those animals welcoming the newborn. Yet the motif was already seen in art from the fourth century. It was further popularized by the Gospel of Pseudo-Matthew, an apocryphal text – that is, one not included in the canon of Scripture. Pseudo-Matthew was composed by an anonymous monk, probably in the seventh century, and includes many tales about Jesus growing up. After its account of Jesus’ birth, the Bible is almost entirely silent on his childhood. Yet legends about Jesus’ early years circulated widely in the Middle Ages – the focus of my 2017 book. While the detail of the ox and ass is quite familiar to many Christians today, few are aware of the other striking tales transmitted by the apocrypha.
These apocryphal legends also show the boy Jesus having powerover the animal world. When he enters a dreaded lion’s cave, cubs “ran about around his feet, fawning and playing with him,” while “the older lions … stood at a distance and worshipped him, and wagged their tails before him.” Jesus tells bystanders that the beasts are better than they are, because the animals “recognize and glorify their Lord.” Indeed, these tales characterize Jesus as a rather haughty boy, conscious of his divinity and not happy with those who treat him as a mere child. At the same time, they depict him as a real child who likes to play. The boy Jesus is childlike in the way he often acts on impulse, not paying much attention to the admonitions of his elders.A 14th-century manuscript, the ‘Klosterneuburger Evangelienwerk,’ shows the young Jesus playing with lions.Schaffhausen City Library via Wikimedia Commons His affinity for animals, too, makes him seem childlike. Strikingly, beasts in the apocrypha, beginning with the ox and ass, often seem to realize that Jesus is no ordinary child before human characters do. The legends’ insidious insinuation that many of the Jews around Jesus were not as perceptive as the animals is part of medieval Europe’s widespread antisemitism. In one fifth-century sermon, Quodvultdeus, the bishop of Carthage, asks why the animals’ recognition of Jesus in the manger was not a sufficient sign for the Jews.The 14th-century Holkham Bible picture book depicts Jesus performing chores at home (London, British Library, Additional MS 47682, fol. 18).Courtesy British Library In the Bible, Jesus works his first miracle as an adult, at a wedding feast in Cana. The apocryphal tales, however, toy with the idea of the God-man revealing his power early on. The legends suggest that the childishness of Christ distracted many of those around him, preventing them from concluding that he was the Messiah. This allows the apocrypha to avoid contradicting the Bible’s reference to Jesus as simply “the carpenter’s son,” the opposite of a wonder child. Each Christmas, modern Christians in the Western world tend to celebrate Jesus’ birthday, then quickly drop the theme of the Christ child. Medieval Christians, in contrast, were fascinated by tales about the Son of God growing up. Despite acting as a dragon tamer, physician and magician, the young Jesus of the apocrypha largely flies under the radar, cloaking his divinity with “little rascal” boyishness. Mary Dzon, Associate Professor of English, University of Tennessee This article is republished from The Conversation under a Creative Commons license. Read the original article.