Dave Davies

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.

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