In this video Paul Andersen explains how biodiversity measures the variety of genes, species, and ecosystems on the planet. Biodiversity provides resources and ecosystem services for humans on the planet. He also explains how...

So, how are people fixing their water problems? In this episode of Crash Course Kids, Sabrina talks about a few different examples how some freshwater sources were good, then bad, then made good again. Also, Sabrina talks about...

Delve into the remarkable yet precarious existence of the American horseshoe crab, a species that has thrived for over 200 million years but now faces an uncertain future.

Delve into the remarkable yet precarious existence of the American horseshoe crab, a species that has thrived for over 200 million years but now faces an uncertain future. Learn about their unique characteristics, vital role in medical...

Delve into the remarkable yet precarious existence of the American horseshoe crab, a species that has thrived for over 200 million years but now faces an uncertain future. Learn about their unique characteristics, vital role in medical...