YELLOWSTONE volcano threatens to kill more than five billion people and plunge the world into a nuclear winter the next time it erupts, a geologist has gravely warned.
Yellowstone volcano SHOCK: Eruption 'can kill 5 BILLION' in fiery fallout, warns geologist
YELLOWSTONE volcano threatens to kill more than five billion people and plunge the world into a nuclear winter the next time it erupts, a geologist has gravely warned.
