Why do we harvest horseshoe crab blood? - Elizabeth Cox
TED-Ed
Next Episodes
Should we get rid of standardized testing? - Arlo Kempf @ TED-Ed
📆 2017-09-19 17:04
How do executive orders work? - Christina Greer @ TED-Ed
📆 2017-09-18 17:00
What are gravitational waves? - Amber L. Stuver @ TED-Ed
📆 2017-09-14 17:00
Is it possible to create a perfect vacuum? - Rolf Landua and Anais Rassat @ TED-Ed
📆 2017-09-12 17:02
How many ways are there to prove the Pythagorean theorem? - Betty Fei @ TED-Ed
📆 2017-09-11 17:00