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Season 2 Episode 12 | 9m
In order to understand where hearts came from, we have to go back to the earliest common ancestor of everything that has a heart. It took hundreds of millions of years, and countless different iterations of the same basic structure to lead to the heart that you have today.
Aired: 02/14/19
Video has closed captioning.
When Giant Lemurs Ruled Madagascar
Just a few thousand years ago, the island of Madagascar was inhabited by giant lemurs.
There is no missing link in our lineage, because that’s not how evolution works.
When Giant Deer Roamed Eurasia
Megaloceros was one of the largest members of the deer family ever to walk the Earth.
