SciShow

The 4 Most Irreplaceable Places (2013x176)

Ausstrahlung: Nov 17, 2013

What's the awesomest place in the world? Scientists can think of at least 137, the newly released list of the most biologically important places on Earth. Hank explains how ecologists arrived at this list, and takes you on a tour of four of them, from the mountains of Tanzania to the flattened hilltops of Venezuela.