Dave Davies

On April 4, 1968, Martin Luther King Jr. was killed on the balcony of the Lorraine Hotel in Memphis, Tenn. For the next two months, the man who shot him, James Earl Ray, was able to evade the FBI during a massive worldwide manhunt. Writer Hampton Sides traces the movements of both King and Ray in his new book, Hellhound on His Trail.

A 2009 law gives the FDA the authority to regulate tobacco products for the first time. New York Times reporter Duff Wilson, who covers the tobacco industry, explains what the ruling means -- and what impact it could have on the industry.

Ideas that writer Jeff Goodell used to regard as bad science fiction — like launching particles into the stratosphere to reflect sunlight — are now being taken seriously because of global warming concerns. Goodell examines the science behind tinkering with the Earth's climate in his new book, How to Cool the Planet.