Agricultural research aims to improve harvests on warmer planet

Voice of America: Climate change has brought dramatic droughts and floods around the world, ruining harvests of important cereal crops and reviving concerns about food security on a warmer planet. Researchers at the U.S. Department of Agriculture are looking at cereal crops at risk and their wild, weedy relatives. The weeds are more resilient under extreme conditions, and seem to be benefiting from climate change, while regular crops suffer. Plant physiologist Lewis Ziska has been comparing cultivated rice and......

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