Hr2: Diatoms, Ants, Chasing Coral

Jul 14, 2017, 07:00 PM

Ants can build awesome colonies underground. But did you know they can build tall towers too? A look at what engineers can learn by studying a social community of the ant kind. Plus, a filmmaker documents the devastation of bleached coral reefs in the warming oceans. Why he thinks dying coral could stir faster action on climate change.