Ever wonder how a dolphin sleeps while still swimming? Or how a giraffe sleeps while standing up? Cara Santa Maria, Narrator of Smithsonian Earth's "The Secret World of Animal Sleep" joins Cheddar to explore the wild world of sleeping animals.
Marine mammals only shut down half their brain while sleeping, leaving the other half of their body to stay afloat and be alert for prey. She explains how the higher up on the food chain you are, the more sleep you get. That's why prey species like giraffes can only afford mere minutes of sleep at a time, while lions revel in over 20 hours of luxurious slumber a day.
Arctic ground squirrels survive harsh Canadian winters through skilled hibernation. Entering a state of controlled hypothermia, their body temperatures drop to 27°F – the lowest ever recorded in a mammal.
The huge parachute used by NASA's Perseverance rover to land on Mars contained a secret message.
KoBold Metals announced a partnership with Stanford University to improve mineral mining efficiency while also receiving investments from major players in the climate space such as Breakthrough Energy Ventures overseen by Bill Gates and Jeff Bezos.
An analysis by U.S. regulators says Johnson & Johnson's single-dose vaccine protects against COVID-19.
The COVID-19 death toll in the U.S. has topped 500,000, all but matching the number of Americans killed in World War II, Korea, and Vietnam combined.
A bone cancer survivor who's now a physician assistant will join a billionaire on SpaceX's first private spaceflight this fall.
Southern U.S. cities slammed by winter storms that left millions without power for days have traded one crisis for another.
President Joe Biden toured a state-of-the-art coronavirus vaccine plant Friday as extreme winter weather across broad swaths of the U.S. handed his vaccination campaign its first major setback.
A NASA rover has landed on Mars in an epic quest to bring back rocks that could answer whether life ever existed on the red planet.
Power was restored to more homes and businesses in Texas after a deadly blast of winter this week overwhelmed the electrical grid and left millions shivering in the cold.
In 1856, a chemistry student named William Henry Perkin accidentally created a strange substance with a rich purple hue. That accident turned out to be the world’s first synthetic dye.
