Bloomberg: Water shortages triggered by climate change may be severe enough by 2100 to put Californian farms out of business unless global warming is stemmed, the Los Angeles Times reported, citing U.S. Energy Secretary Steven Chu. In his first media interview since taking the job under President Barack Obama, the Nobel-prize winning physicist said public awareness is lacking, in the report published today. “I don’t think the American public has gripped in its gut what could happen,” Chu …