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Officials found the toxin microcystin in the blue-green algae present at Discovery Bay, Calif. For people exposed to the toxin, symptoms include dizziness, rashes, fever, vomiting and in more unusual cases, numbness.

Poisonous Algae Blooms Threaten People, Ecosystems Across U.S.

Serious algae outbreaks have hit more than 20 states this summer. Algae blooms aren't unusual. But the frequency, size and toxicity now are worse than ever, and changes in climate are partly to blame.

California Water Board Streamlines Recycled Water Use

California State water managers have approved a new process to promote the use of treated wastewater during the drought.

Point Loma Wastewater Treatment Plant supervisor David Huntamer shows off the facility that processes much of the region's sewage, Nov. 5, 2014.

San Diego Is On The Verge Of A Major Water Recycling Project

San Diego is on the cusp of addressing two big problems: diverting sewage headed for the Point Loma wastewater treatment plant and creating 83 million gallons of potable water a day.

Warming sea surface temperatures in the Equatorial Pacific Ocean, shown in red, signal a strengthening El Niño, July 2015.

Strengthening El Niño May Trigger Wet Winter In San Diego

The strongest El Niño in nearly 20 years seems to be developing in the tropical Pacific Ocean, according to the latest forecast by the National Oceanic Atmospheric Administration.

A man observes crashing waves from the Pacifica Pier in Pacifica, Calif., in January.

Stick A Fork In It: Federal Meteorologists Say El Nino Is Done

This year's extra-large El Nino weather pattern is over, according to federal meteorologists. The pattern brought heavy rain to many parts of the country and was one of the strongest ever.

A firefighter puts water on a house fence during a wildfire in Carlsbad, May 14, 2014.

More Californians Are Refusing To Evacuate Despite Fire Danger

Even though the state considers it a criminal offense to ignore mandatory evacuation orders, leaving or staying when fire approaches is often a personal decision. And many homeowners are staying put.

Donald Trump speaks during a news conference at Trump National Doral on July 27 in Doral, Fla. That was his last press conference.

President-Elect Trump Breaks With Long History Of Press Conferences

Donald Trump hasn't held a press conference since July, opting instead for frequent tweets and the occasional interview. Presidents-elect typically take questions from reporters within days.

A building on Fort Hood Army Base in Fort Hood, Texas, is seen in this 2014 photo. Rescue crews were searching for four soldiers missing after a training accident on Thursday.

At Least 5 Soldiers Dead In Fort Hood After Truck Overturned In Swollen Creek

Teams are searching for four soldiers still missing after the tactical vehicle was swept away. Torrential rains have caused flooding in much of central Texas, and caused streams and rivers to rise.

The goldspotted oak borer, pictured, was found in San Diego County in the early 2000s. But it wasn't until recently that officials discovered that the beetle, combined with the drought, has killed tens of thousands of oak trees.

Forestry Officials Ramp Up Fight Against Invasive Beetles

One species that originated from Arizona has infested more than 100,000 acres across San Diego County. One thing campers can do to help curb the beetles’ spread: buy firewood locally.

Alejandra Ventura lifts her dog out of the water after the Brazos River topped its banks and flooded a mobile home park in Richmond, Texas, on Tuesday.

Flooding In Texas Kills 6, With More Rain Forecast

The Brazos River has already reached record levels and forced hundreds of people west of Houston to evacuate. Weather experts predict 4 to 5 more inches of rain around Houston through the weekend.

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