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Crops Face Toxic Timebomb in Warmer World: Study

A farm worker collects cassava at the expropriated and now redistributed farm of El Charcote in the central state of Cojedes March 25, 2009.
(REUTERS/Jorge Silva)

SINGAPORE - Staples such as cassava on which millions of people depend become more toxic and produce much smaller yields in a world with higher carbon dioxide levels and more drought, Australian scientists say.

The findings, presented on Monday at a conference in Glasgow, Scotland, underscored the need to develop climate-change-resistant cultivars to feed rapidly growing human populations, said Ros Gleadow of the Monash University in Melbourne.