ThinkProgress: September was the warmest on record for the Imperial Valley, with temperatures climbing over 90 degrees. That meant trouble for farmer Alex Jack.
It got so hot that we had a lot of problems with seeds not germinating, said Jack, who grows lettuce, cauliflower, broccoli, and other crops in a California desert region known for producing more than two-thirds of the vegetables consumed in the United States during the winter.
To make matters worse, after dealing with unusual heat and a 60 percent...