Ever wondered why zebras sport those iconic black and white stripes? These striking patterns have intrigued scientists for decades! Zebras, part of the equine family like horses and donkeys, evolved into three distinct species in Africa. They live in social herds, graze on grasses, and dodge predators. The stripes, however, remain a scientific enigma. Some […]
Spacewalks are among the more dangerous activities associated with human spaceflight. Ignatiev/E+ via Getty Images Chris Impey, University of Arizona Space is an unnatural environment for humans. We can’t survive unprotected in a pure vacuum for more than two minutes. Getting to space involves being strapped to a barely contained chemical explosion. Since 1961, fewer […]
From SciShow: We’ve learned a lot about Megalodon by studying its terrifying teeth. But we’re just beginning to understand what made this ancient shark so huge.
Ze Frank is back, and this time he’s wriggling his way into the world of snakes in his latest “True Facts” video: How Snakes Move. If you’ve ever wondered how a creature with no legs manages to get anywhere, let alone do it with such swagger, Ze Frank has the answers—and, as always, they’re as […]
Light from stars travels through space, which is mostly an empty vacuum. William Attard McCarthy – McCarthy’s PhotoWorks/Moment via Getty Images Nilakshi Veerabathina, University of Texas at Arlington Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is […]
In this fascinating video from TED-Ed, dive into the science of how prolonged space travel changes the human body. From muscle atrophy to fluid shifts and more, find out how even with advanced technology like pressurized suits, oxygen tanks, and insulation, the space environment presents unique challenges.
Ever wondered if the immense pressure in the deep ocean keeps it from freezing? While pressure can indeed melt ice, it takes a lot to make a difference. At 500 times atmospheric pressure, ice melts at -4°C; at 1000 times, it melts at -9°C. For saltwater, which freezes at -2°C at the surface, the freezing […]
SpaceX’s Polaris Dawn mission aims to test newly designed spacesuits. SpaceX, CC BY-NC-ND Wendy Whitman Cobb, Air University SpaceX’s upcoming Polaris Dawn mission aims to be historic in more ways than one. Polaris Dawn plans to not only orbit Earth higher than any astronauts have in more than 50 years but to also feature the […]
From Wondrous Walk: Explore the incredible diversity of animal pupils and discover how their unique shapes reflect each animal’s role in its ecosystem. When you look into the eyes of various animals, you’ll notice some extraordinarily shaped pupils. For example, house cats are twilight hunters with vertically elongated pupils. Many grazing animals, like goats, have […]
Luiza Kamalova/Shutterstock Adam Taylor, Lancaster University Social media challenges can range from bizarre, hilarious to downright dangerous – it seems there’s no limit to what some people will do for likes. Take the “gallon challenge”, for instance. Social media influencers encouraged their followers to consume a gallon (3.78L in the UK) of milk in 60 […]