Instructional Video11:00
TED Talks

Kristie Ebi: How climate change could make our food less nutritious

12th - Higher Ed
Rising carbon levels in the atmosphere can make plants grow faster, but there's another hidden consequence: they rob plants of the nutrients and vitamins we need to survive. In a talk about global food security, epidemiologist Kristie...
Instructional Video17:45
Howard Hughes Medical Institute

The Origin of Species: Lizards in an Evolutionary Tree

6th - 12th
Different islands in the Caribbean have very similar species of anole lizards, which each have their own place in the ecosystem. Researchers did several studies to determine whether the anoles evolved into the different species then...