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 White House says President Joe Biden will ease foreign travel restrictions into the U.S. beginning in November.
Pfizer says its COVID-19 vaccine works for children ages 5 to 11 and it will seek U.S. authorization for this age group soon — a key step toward beginning vaccinations for youngsters.
An influential federal advisory panel has overwhelmingly rejected a plan to give Pfizer booster shots against COVID-19 to most Americans, but it approved the extra shots for those who are 65 or older or run a high risk of severe disease.
President Joe Biden is trying to hammer out the world’s next steps against rapidly worsening climate change in a private, virtual session with a small group of other global leaders.
Scientists say the Southern Hemisphere ozone hole is larger than usual and already surpasses the size of Antarctica.
The slaughter of 1,428 white-sided dolphins as part of a four-century-old traditional drive of sea mammals into shallow water in the Faeroe Islands where they are killed has reignited a debate in the small North Atlantic islands.
Space Milestone, Booster Debate & Greatest Songs Ever
President Joe Biden has invited CEOs and business leaders to the White House to discuss COVID-19 mandates.
For the first time in 60 years of human spaceflight, a rocket is poised to blast into orbit with no professional astronauts on board, only four tourists.
Solar energy has the potential to supply up to 40% of the nation’s electricity within 15 years — a 10-fold increase over current solar output, but one that would require massive changes in U.S. policy and billions of dollars in federal investment to modernize the nation's electric grid, a new federal report says.
