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It's Okay to Be Smart: Why Are We Warm Blooded?

11 minutes 18 seconds

Now Playing As: Captioned (English) (change)

A human with the metabolism of a hummingbird would need to eat about 80,000 calories a day to survive. That’s because staying warm by making one's own heat takes a ton of energy. And that brings up a paradox because creating one's own body heat is incredibly expensive. Part of the "It's Okay to Be Smart" series.

Media Details

Runtime: 11 minutes 18 seconds

Topic: Science
Subtopic: Biology, Physiology, Science Methods
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2021
Producer/Distributor: PBS Digital Studios
Series: It's Okay to Be Smart
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Seven different butterflies, where four are placed at the corners facing the butterfly at the center and two at either side of the central butterfly.

Different math equations and graphs are drawn, with a butterfly as the backdrop.

An animal with the body of a lion, an extra goat head on its back, and a snake instead of a tail. Caption: Chimera.

A star filled night sky. Caption: P B S.

Sunlight is shining through in a forest with large number of trees.

Eggs of Screech owl, Turkey vulture, Audubon's Caracara, Kingfisher, Common Murree, Yellow Billed. Caption: Stoddard Et Al. Science 20 17.

A view of Moon in the dark sky. Caption: Maria, Latin for seas, and Sea of Tranquility, Mare Tranquillitatis.

Two different types of bacteria are seen all over a human outline. Caption: 37.2 trillion and 39 trillion.

Collage with black and white illustration of a twelfth century Chinese man holding out a scrap of paper. A red lantern on a pole overhead. Red prohibited symbol covers image of 2 gold bars.

The sample particles enter the mass spectrometer, which is accelerated, and then separated according to their individual mass of the particles by a magnet.