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Crisis management: Seven ways to engineer climate
JAY GORY, MANAGING EDITOR, science
Dismissed a decade ago as far-fetched and dangerous, schemes to tame global warming by engineering the climate have migrated from the margins of policy debates towards centre stage. DRAWBACK: Studies calculate that upward of 40 percent of arable land -- twice the area of India -- would need to be given over to biofuel crops, putting the scheme in conflict with food crops. read more


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