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Rob Stein is a correspondent and senior editor on NPR's science desk.

Two doctors wrote a book that probes the environmental, biological and socioeconomic factors contributing to early puberty. These girls face risks like anxiety and depression, one author says.

The "spaghetti maps" that forecast hurricane tracks, such as those being used to predict the track of Hurricane Sandy, have become increasingly accurate and sophisticated. That's in part because of the work performed by some of the world's most powerful supercomputers.

An Alzheimer's drug that removes the substance amyloid from the brain has received a conditional approval from the FDA. A large study found the drug decreased the loss of thinking and memory by 27%.

The movie that was nominated for several Oscars began as a self-published book by Andy Weir. NPR's Lynn Neary looks at how an unknown author's book became a hit audio book and major motion picture.

A roundup of useful advice from our June episodes: how to reach a "eureka moment" at work, the safest place to put a grill (not against the house!), and a counterintuitive way to get over your crush.

Prosecutor Marilyn J. Mosby said at a news conference that the officers will be arraigned July 2. The charges against them are mostly similar to those announced May 1.

With the help of reporter Dexter Filkins, an Iraq vet seeks atonement for an early war tragedy. Critic Ed Ward reviews a new collection of hard-hitting singles from the man behind "Shake, Rattle and Roll." And Tom Wolfe takes Miami's pulse in his novel Back to Blood.

The death of the unarmed black man was a homicide that resulted from "acts of omission" by the police, according to The Baltimore Sun.

The discovery is reminiscent of the period following the U.S.-led invasion of Iraq when Sunni and Shiite death squads roamed the streets. More than 5,000 people have been killed this year, making it one of the deadliest years in Iraq since violence hit a peak in 2006-'07.