'Sagan was co-author of the first scientific paper to predict that this weather condition would follow atomic war'
nuclear winter
CARL SAGAN: Sagan was co-author of the first scientific paper to predict that this weather condition would follow atomic war
Sagan was co-author of the first scientific paper to predict that this weather condition would follow atomic war
Sagan was co-author of the first scientific paper to predict that this weather condition would follow atomic war
CARL SAGAN
nuclear winter
CARL SAGAN