Planet Watch
The Bulletin of the Atomic Scientists advanced the minute hand of its Doomsday Clock to two minutes of midnight from its previous two-and-a-half minutes. "In 2017, world leaders failed to respond effectively to the looming threats of nuclear war and climate change, making the world security situation more dangerous than it was a year ago—and as dangerous as it has been since World War II," the Bulletin said. Finding that the "greatest risks last year arose in the nuclear realm," the statement of course cited the crisis over North Korea's atomic weapons program, but also ongoing military exercises along the borders of NATO, upgrading of nuclear arsenals by the US and Russia, tensions over the South China Sea, a nuclear arms race between India and Pakistan, and uncertainty about continued US support for the Iran nuclear deal. These threats are worsened by "a breakdown in the international order that has been dangerously exacerbated by recent US actions." (Image: misucell.com)