Why nuclear war is closer than ever: That's the chilling verdict of historian SERHII PLOKHY who reveals the FORTY countries which could blow the world apart... and t…

I was born and have lived my entire life under the threat of universal extermination that followed that summer's day in 1945 ...
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What NASA learned after bombing a moving comet

When NASA set out to slam a spacecraft into a comet, the goal was not spectacle but data: a controlled impact that could peel ...