Scientists Unlock A Key To How Increasing Levels Of Carbon Dioxide Affect Food Crops

A team of U.S. scientists has discovered how carbon dioxide limits the ability of plants to deal with heat and drought. The discovery, reported in this week's early online edition of the journal Nature, is boosting hopes that researchers may be able to engineer plants to withstand higher temperatures and lower rainfall. The scientists, from the University of California, San Diego, and the University of Missouri, said they discovered a genetic pathway in plants that controls the thickness of brea...