KASHIWAZAKI, Japan — A 6.8 magnitude earthquake rocked the world's largest nuclear plant on Monday, causing a transformer fire. Since then, revelations have been coming out about spills and leaks at the plant.

CHERNOBYL, Ukraine — A new Greenpeace report has revealed that the full consequences of the Chernobyl disaster could top a quarter of a million cancers cases and nearly 100,000 fatal cancers.

The exact number of nuclear weapons situated across the world is shrouded in mystery, but whatever the number, North Korea's underground test this week is a grim reminder of the devastation and destruction these weapons could unleash.

AMSTERDAM, Netherlands — What are the thoughts of someone who might be about to die for his beliefs? A recently uncovered audio tape from the early 1970s documents what Greenpeace activist David McTaggart had to say from the cabin of the tiny,...