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Blame the increase in frequency and severity of wildfires in California on drought and climate change. As the number of fires goes up each year, so does the costs of suppression. Those firefighting costs have also increased because more people are living in what fire scientists call the “urban-wildland interface.” “It just shows you the cost escalation because of just the way we’ve chosen to live in our landscape,” says Scott Stephens, Professor of Fire Science at UC Berkeley and co-director of the Center for Fire Research and Outreach at the university.

Scientists from two federal agencies are about to overhaul the rules governing the Sacramento-San Joaquin Delta, potentially increasing protections for endangered fish populations and limiting the amount of water pumped to Southern California and the San Joaquin Valley. The National Marine Fisheries Service and U.S. Fish and Wildlife Service will re-examine the nearly decade-old environmental regulations covering the Delta water pumps – rules that some experts say have been rendered nearly obsolete by drought and the devastation to endangered species. The old rules will remain in effect during the review, which could take two years or longer.

The drought rules were relaxed, but Californians didn’t open the spigots.The state’s urban residents are continuing strong water conservation, cutting water use 21.5 percent in June compared with June 2013, the baseline year, despite state officials easing mandatory drought targets earlier this year. The new data was released Tuesday morning by the State Water Resources Control Board in Sacramento.“It’s maybe not as good as we hoped, but it’s better than we feared with conflicting messages out there,” said Felicia Marcus, chairwoman of the board.

Harmful plumes of algae in waterways have been much in the news lately, in California and nationally. We talked to James Cloern, a senior scientist at the US Geological Survey and a member of the PPIC Water Policy Center’s research network, about this pressing water quality issue. PPIC: What are algal blooms, and how big a problem are they for California? James Cloern: Our waterways are home to many thousands of species of microscopic algae, but only a few dozen can develop into harmful blooms.