View full lesson: http://ed.ted.com/lessons/how-antibiotics-become-resistant-over-time-kevin-wu

Right now, you are inhabited by trillions of microorganisms. Many of these bacteria are harmless (or even helpful!), but there are a few strains of ‘super bacteria’ that are pretty nasty — and they’re growing resistant to our antibiotics. Why is this happening? Kevin Wu details the evolution of this problem that presents a big challenge for the future of medicine.

Lesson by Kevin Wu, animation by Brett Underhill.
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What are those floaty things in your eye? - Michael Mauser

View full lesson: http://ed.ted.com/lessons/what-are-those-floaty-things-in-your-eye-michael-mauser

Sometimes, against a uniform, bright background such as a clear sky or a blank computer screen, you might see things floating across your field of vision. What are these moving objects, and how are you seeing them? Michael Mauser explains the visual phenomenon that is floaters.

Lesson by Michael Mauser, animation by Reflective Films.
Video Rating: / 5