As an Evangelical and a scientist, Katharine Hayhoe is already a member of a rare breed. As a climate change researcher who is also married to an evangelical Christian pastor, she is nearly one of a kind.

In 1967, biologists Roger Payne and Scott McVay discovered that humpback whales “sing” and published recordings of the whales’ complex vocalizations, after which “whale song” quickly entered the popular consciousness and helped propel the “save the whales” environmental movement forward.

In this video conversation, Jeff Schloss makes the observation that when we use the term “evolution”, it is not always exactly clear what we are actually discussing unless we denote the intended usage.