Learn · TED

Talk5 min

The other "Golden Rule"

David L. Hu · TED

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About

A cat's bladder can only store a golf ball's worth of urine. For humans, it's a coffee mug and for elephants, a kitchen trash can. An elephant's bladder is 400 times the size of a cat's, but it doesn't take an elephant 400 times longer to pee. So, how does this work? David L. Hu digs into what scientists call the "Other Golden Rule." [Directed by Anton Bogaty, narrated by Jack Cutmore-Scott].

The talk

  1. The other "Golden Rule" 5 min · TED's player

Credits and licence

Institution
TED
Department
TED-Ed
Speaker
David L. Hu
Year
2020
Level
For everyone
Language
English
Subjects
Physics, Biology, Teaching and learning
Source
TED
Licence
CC BY-NC-ND 4.0, as TED states it. Non-commercial use only, and no changed versions. TED's terms
Attribution
TED Talks are licensed by TED under Creative Commons BY-NC-ND 4.0 International and are shown here in TED's own player, as TED's usage policy asks.
Who can watch
TED gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed