SATELLITE images show increased tunneling at North Korea’s secret nuclear site– indicating that the crackpot country could be preparing another nuke test. Thesun.co.uk

Nuclear strikes could be launched by mistake because aging or unsophisticated weapons systems are vulnerable to cyberattacks, an international relations think tank warned Thursday. Nbcnews.com

Nuclear bombs—with a few exceptions—are designed to create huge explosions. In some cases, they’re supposed to have extra bits and pieces in the service of making even HUGER (it’s a word now) explosions. Occasionally all of that fails, and what you get is called a “fizzle.” Here’s why it happens. Foxtrotalpha.jalopnik.com

A newly installed melter at the Defense Waste Processing Facility at the US Department of Energy’s Savannah River site has poured its first canisters of vitrified radioactive waste. World-nuclear-news.org