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.

Robert F. Kennedy is often remembered as a liberal icon who worked to heal racial strife, decrease poverty and end the war in Vietnam. But early in his career, biographer Larry Tye notes, Kennedy was a hard-edged anti-communist who worked for red-baiting Sen. Joe McCarthy, authorized the wiretapping of Martin Luther King Jr. and supported American intervention in Vietnam. Tye chronicles Kennedy's transformation.