This video explains how a variety of micro organisms live on our body and are responsible for several functions.

In this clip the host studies the origin of viruses, and covers how they ended up in mammals.

Expains regression lines and using data to make predictions.

Hank explains how plastic pollution has had unintended consequences on our planet. He explains how this pollution results in the emission of greenhouse gases, antibiotic resistance and how these pollutants could end up being eaten by people when they eat seafood.

Ancient Mesopotamia proved that fertile land and the knowledge to cultivate it was a fortuitous recipe for wealth and civilization. Learn how this "land between two rivers" became the birthplace of the world's first cities, advancements in math and science, and the earliest evidence of literacy and a legal system.