Particles enriched with uranium, used to make nuclear fuel and bombs, have been detected above Alaska - and their source remains a mystery. Scroll down for videoParticles enriched with uranium, used to make nuclear fuel and bombs, have been detected above Alaska in a world first. During millions of research missions using planes to capture atmospheric particles, experts have never before obtained a sample containing uranium-235. Researchers believe the sample came from recently created reactor-grade uranium, perhaps from burnt nuclear fuel. During millions of research missions using planes to capture atmospheric particles, experts have never before obtained a sample containing uranium-235.

Source: Daily Mail February 15, 2018 12:39 UTC