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.

Share:
More In Science
Fauci Warns of 'Suffering and Death' if U.S. Reopens Too Soon
Dr. Anthony Fauci, the nation’s top infectious disease expert, is warning Congress and the nation of what he calls "really serious” consequences of suffering, death and deeper economic damage if state and local officials lift stay-at-home orders too quickly.
What The Pronunciations Of Brand Names Really Mean
Marketers use a linguistic science called ‘Sound Symbolism’ to aid in naming brands and products. The science focuses on the sounds of words and how they can affect how people perceive a word. Join Cheddar as we examine just how brand names come to be formed and if a brand by any other name is just as lucrative.
U.S. Shelves Detailed Guide to Reopening Country: AP
The Trump administration has shelved a set of detailed documents created by the nation’s top disease investigators meant to give step-by-step advice to local leaders deciding when and how to reopen public places during the still-raging pandemic.
Load More