Guardian: The world's food crisis, where 1 billion people are already going hungry and a further 2 billion people will be affected by 2050, is set to worsen as increasing heat waves reverse the rising crop yields seen over the last 50 years, according to new research.
Severe heat waves, such as those currently seen in Australia, are expected to become many times more likely in coming decades due to climate change. Extreme heat led to 2012 becoming the hottest year in the U.S. on record and the worst corn...