Peter Ward: A theory of Earth's mass extinctions

About this film

Asteroid strikes get all the coverage, but Medea Hypothesis author Peter Ward argues that most of Earth's mass extinctions were caused by lowly bacteria. The culprit, a poison called hydrogen sulfide, may have an interesting application in medicine.

Directors & creators

TED.com

Subjects

TedTalks;TED;Talks;disease;environment;global issues;history;life;science;space;TED2008;2008

View on archive.org ↗