Agence France-Presse: U.S. farmers can grow more corn than ever before thanks to genetic modifications and improved planting techniques, but the crops are also increasingly vulnerable to drought, researchers recently said.
The study in the journal Science found that "densely planted corn appears to be unexpectedly more sensitive to water scarcity," raising concerns about future food supply as the planet warms.
The United States is the largest exporter of corn in the world, shipping about 40 percent of the world`s...