Not all subduction zones are equal in carbon dioxide generation . Virtual 'Time-Machine' To Map Earth's Past And Future . More droughts, more flooding rains . Role of Ice Age Dust in Climate Change . Climate shift linked to rise of Himalayas, Tibetan plateau .
Greenhouse gases main reason for quicker northern winter warming .
Most-serious greenhouse gas is increasing, international study finds . A 'four-piston engine' drives earth from the inside, new study shows . New technology reduces noxious emissions . Miniature unmanned planes descend on arctic for research . Findings may boost efforts to destroy pollutants with ultrasound .