A Q&A with Jeffrey Schlegelmilch, author of a new book on potential future calamities, and how they may play off one another.

Even a limited nuclear exchange between India and Pakistan would cause unprecedented planet-wide food shortages lasting more than a decade.

Using newly refined analysis methods, scientists have discovered that a North Korean nuclear bomb test last fall set off aftershocks over a period of eight months on a previously unmapped earthquake fault nearby.

Seismologist Lynn Sykes has been working for more than 50 years to halt the testing of nuclear bombs. In his forthcoming book, Silencing the Bomb: One Scientist’s Quest to Halt Nuclear Testing, Sykes provides an insider’s look at the science behind detecting explosions, and international efforts to establish a series of treaties.