warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia.
warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia.
global issue:135
warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia.