It’s been done for two decades but after the release of a new report, controversy is building. Should farmers irrigate crops with waste water from oil extraction? Even with recent rains, the demand for water sources is high. About 80 percent of the water used by Californians goes to agriculture. Stephen Stock investigates as scientists call for a halt to the practice until more is known about the chemicals in that water.
Four weeks in, the man who says he inherited "a mess" at home and abroad is presiding over a White House that is widely described as itself being a mess.
At a stunning pace, President Donald Trump has riled world leaders and frustrated allies. He was dealt a bruising legal blow on one of his signature policies. He lost his national security adviser and his pick for labour secretary to scandal. He's seen forces within his government push back against his policies and leak confidential information. All of this has played out amid a steady drip of revelations about an FBI investigation into his campaign's contacts with Russian intelligence officials. But Trump says his administration is running like a "fine-tuned machine."