A damaged corn field in central Kansas, during the widespread US drought of 2012. Scientists are unsure whether the drought was linked to climate change, but warn that climate change will almost certainly disrupt agricultural production over the next few decades.


REUTERS/Jeff Tuttle

There's a new warning this week about the likely impact of climate change on the world's food supply. It's part of a leaked draft report from the U-N's climate science panel, the I-P-C-C.

The draft says climate change is likely to cut global crop yields over the next few decades even as demand for food keeps growing fast, creating a potentially dangerous gap.  

Co-author David Lobell of Stanford's Center on Food Security and the Environment says the overall trends are clear but that scientists are still trying to get a fix on where the changes might be most dramatic.

He spoke with The World's host, Marco Werman.


An abandoned irrigation canal in Gansu province, China, in September 2013. Hundreds of rivers have vanished in recent years in northwestern Gansu, one of China's driest regions. Experts blame both climate change and the country's penchant for massive water projects.


REUTERS/Carlos Barria

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