A relatively safe region within the seas of radiation that surround Earth owes its existence to lightning storms. (p. 235)

Researchers have devised a way to pinpoint leaks in spacecraft by listening to ultrasound waves traveling through the ship's hull. (p. 212)

Astronomers have found the earliest traces of galaxy clustering, from a period just 1 billion years after the birth of the universe. (p. 148)

Astronomers say they have found the only known galaxy devoid of stars. (p. 131)

An experimental test predicts which breast tumors will spread rapidly without treatment and which are likely to be less aggressive by tracking the activity of genes normally involved in mending injured tissue. (p. 118)