Climate change threatens wheat crop, farmers fear

In these volcanic valleys of central Mexico, on the Canadian prairie, across India’s northern plain, they sow and they reap the golden grain that has fed us since the distant dawn of farming. But along with the wheat these days comes a harvest of worry.

Yields aren’t keeping up with a world growing hungrier. Crops are stunted in a world grown warmer. A devastating fungus, a wheat "rust," is spreading out of Africa, a grave threat to the food plant that covers more of the planet’s surface than any other.

Charles J. Hanley

Full Story: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/11/14/BULI1G54EG.DTL&type=business