Climate scientist Bronwen Konecky travels to tropical regions around the world gathering evidence of the geologic past. Using data from rain samples and sediments deep at the bottom of lakes, she is piecing together a story about Earth's climatic history – and what it can tell us about our...

Religious studies scholars Elaine Pagels and Laurie Maffly-Kipp discuss the Book of Revelation and how it has been interpreted across time, as well as the personal side of their writing and research.