CBS News @CBSNews
For three years, the hands of the world's Doomsday clock were set at 100 seconds to midnight. But now, the world has officially crept even closer to what the Bulletin of the Atomic Scientists calls a "global catastrophe." https://t.co/XYTmbevfgf https://t.co/nwD3T9nSfB — PolitiTweet.org