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TED Talks
TED: The science behind a climate headline | Rachel Pike
In 4 minutes, atmospheric chemist Rachel Pike provides a glimpse of the massive scientific effort behind the bold headlines on climate change, with her team -- one of thousands who contributed -- taking a risky flight over the rainforest...
Khan Academy
Khan Academy: From Terpenes to Steroids Part 2: Squalene, Cholesterol & Steroids
After learning about terpenes, let's see how our body uses them to eventually make all the steroid hormones of our body. [4:29]
Khan Academy
Khan Academy: From Terpenes to Steroids Part 1: Terpenes
Steroids have to come from somewhere, right? Let's learn about the carbon building blocks with which steroids are made. [7:50]