| Aug 1, 2013
| 2:34 PM
Hydroelectric dams may be known as a relatively clean and low-cost energy source, but a new study says that the sediment trapped behind them makes them hot spots for greenhouse gas emissions.
A team of European scientists found that methane, which is...
| May 14, 2013
| 1:16 PM
A warming climate is melting the glaciers of Mount Everest, shrinking the frozen cloak of Earth’s highest peak by 13% in the last 50 years, researchers have found.
Rocks and natural debris previously covered by snow are appearing now as the snow...
| Aug 22, 2013
| 6:30 AM
FT. HOOD, Texas—A few days before he gunned down fellow soldiers at this central Texas Army base four years ago, Maj. Nidal Malik Hasan sent an email to superiors about something that had been troubling him: suspected war crimes.
And one day...
| Sep 1, 2013
In recent decades, the Central Coast of California has become one of the state's most important wine-producing regions. But at what cost?
Until recently, most ranchers and farmers in this part of California embraced dry farming practices, raising...
| Sep 3, 2013
| 2:53 PM
Los Angeles City Council members Paul Koretz and Mike Bonin are calling for a moratorium on the practice of hydraulic fracturing, or “fracking,” which is used by energy companies to extract hard-to-reach oil.
In a prepared statement Tuesday,...
| Aug 5, 2013
| 6:53 PM
The benefits of reconfiguring the way California exports water from the Sacramento-San Joaquin delta would substantially outweigh the costs, according to a study released Monday by the state.
“This plan makes economic sense. The numbers more than...
| Aug 10, 2013
| 2:00 PM
Five juvenile burrowing owls flapped across a salt marsh at the Seal Beach Naval Weapons Station on a recent weekday, matching the loops and curves of dragonflies and moths before snatching their prey midair.
Soon, the owls will be feasting on larger...
| Sep 12, 2013
| 1:04 PM
DENVER -- The rains began earlier this week in Colorado, accelerating far beyond the ground’s ability to absorb moisture. Torrents churned into flash floods that have killed at least three people, washed out roads, isolated whole towns and forced...
| Aug 19, 2013
On Aug. 7, the head of the Southern Nevada Water Authority called for federal disaster relief to address the consequences of water scarcity in the Colorado River system. On Friday, the Bureau of Reclamation announced it would be forced to cut the flow...
| Aug 15, 2013
| 7:04 PM
There's been a lot written on improving the concrete, channelized, litter-strewn Los Angeles River. No doubt the river could use some improving, but there's also a lot of misplaced nostalgia.
To hear some people talk about restoring the river, you'd...
| Aug 21, 2013
Re “The shrinking Colorado,” Opinion, Aug. 19
The article mentioned that by 2015, the water level in Lake Mead could dip below the intake pipe that delivers water to Las Vegas, and that Las Vegas is racing to construct a deeper intake pipe...