Did North Korea Test Hydrogen Bomb Technology?

North Korea may have lost control of their World Cup game against Portugal (7-0!), but the nation's also lost control of something much more deadly: Waste products from its attempts to build a hydrogen bomb have been detected in South Korea.

South Korean officials today announced the news, saying that "abnormally" high levels of radiation had been detected along the border with North Korea. Just days ago, the authorities in North Korea announced they had succeeded in a critical step toward...