Dave Davies

In her new book, The Grid, Gretchen Bakke argues that the under-funded power grid is incapable of taking the U.S. into a new energy future. She explains the challenges to Fresh Air's Dave Davies.

Historian Mary Beard says many of our popular notions about the empire are based on culture rather than fact. Her new book is called SPQR. Originally broadcast Nov. 30, 2015.

Marine Ecologist Neil Hammerschlag catches, tags, and tracks sharks to better understand why sharks are declining in population. He says at this point humans are a greater threat to sharks than sharks are to humans.