Terry Gross

Aerospace consultant Nick Cook, author of the new book, The Hunt for Zero Point: Inside the Classified World of Antigravity Technology. (Broadway Books/ Random House) In the book, Cook tracks down the secret history of anti-gravity research. It*s technology that defies the laws of physics. Cook discovered that during WWII, the Nazis claimed to have been close to antigravity technology. The U.S. government allegedly conducted antigravity research in the 1950s and 60s. Cook is former Aviation Editor for the military affairs journal, Jane's Defense Weekly.

Evolutionary biologist and journalist Olivia Judson. In her new guide to the evolutionary biology of sex, Judson, explores the sex lives of animals and insects. Posing as Dr Tatiana, sex-advice columnist, she answers 'letters' posted by such creatures as the fairy wren, the stalk-eyed fly, and the African elephant. Her new book is Dr Tatianas Sex Advice to All Creation.. Judson has also written for The Economist,Nature, and Science.

Writer, explorer, and deep-sea diver Barry Clifford's new book is The Lost Fleet: The Discovery of a Sunken Armada from the Golden Age of Piracy (William Morrow). The lost fleet was a group of French ships that sank in 1678 on the reef of Las Aves island, 100 miles off the Venezuelan coast. The fleet, as well as a small pirate army, was shipwrecked. The event launched "the golden age of piracy" that plagued maritimers for 50 years. Clifford researched the disaster and was part of the team that located the armada. Clifford's previous book was Expedition Whydah.