CBC: New research suggests farms in developed countries may be more vulnerable to longer, deeper droughts predicted to occur as a result of climate change. "(Those farms) are really good in terms of producing high yields in stable climates, but maybe they're more vulnerable to weather shocks," said Navin Ramankutty of the University of British Columbia, co-author of a paper published Wednesday in the journal Nature. Ramankutty and his colleagues examined United Nations crop data from 177 countries between...