By Stephen Smoot
At the opening of the Cold War, the United States and Soviet Union briefly aspired to building larger and larger hydrogen fusion bombs. The USSR’s Tsar Bomba exploded with the power of 50 megatons, shattering glass in buildings as far away as England away and completely obliterated the surface of a deserted Arctic island to this very day. Its shockwave circled the earth three times before dissipating.
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