How many nuclear bombs would have to go off to trigger a nuclear winter?
Nuclear winter is a hypothetical set of circumstances on a likely global climate condition that would follow a large-scale nuclear war A large nuclear bomb bursting at ground level would throw up about a million tonnes of dust and block out a large fraction of the sunlight and the sun’s heat from the earth’s surface. The earth would quickly become dark and cold. Temperatures would drop by something in the region of 10-20ºC. It would take months for the sunlight to get back to near normal. The drop in light and temperature would quickly kill crops and other plant and animal life while humans would be affected by very large-scale malnutrition and disease sounds great eh!
