Clues to prehistoric times, found in blind cavefish – Prosata Chakrabarty


TED Fellow Prosanta Chakrabarty explores hidden parts of the world in search of new species of cave-dwelling fish. These subterranean creatures have developed fascinating adaptations, and they provide biological insights into blindness as well as geological clues about how the continents broke apart millions of years ago. Contemplate deep time in this short talk.

Why are sloths so slow? – Kenny Coogan


Sloths spend most of their time eating, resting, or sleeping; in fact, they descend from their treetops canopies just once a week, for a bathroom break. How are these creatures so low energy? Kenny Coogan describes the physical and behavioral adaptations that allow sloths to be so slow.

Lesson by Kenny Coogan, animation by Anton Bogaty.