Sunday, May 19, 2013

Everest Ice Shrinking Fast, Scientists and Climbers Say

Water forms under a glacier as ice melts.
Everest isn't the same mountain it was when Jim Whittaker became the first U.S. climber to summit the peak in 1963. The world's highest peak has been shedding snow and ice for the past 50 years, possibly due in part to global warming, new research says. (Take an Everest quiz.)

New analyses show Mount Everest has lost significant snow and ice cover over the past half century. In nearby Sagarmatha National Park,

Wind Energy’s Shadow: Turbines Drag Down Power Potential

Wind powered turbines line the crest of a hill.
As seemingly limitless as the air that swirls around us, wind has proven to be the world's fastest-growing source of renewable energy. Backers suggest wind power can continue growing as quickly as companies can raise turbines to capture it.


But some scientists are challenging that assumption, arguing that the laws of physics will limit wind's potential for meeting the world's energy needs. The controversy arises from the turbines themselves. "As soon as you start to put turbines into the wind, you start to change the resource," said Amanda Adams, a meteorologist who conducts atmospheric modeling at the University of North Carolina Charlotte. (See related quiz: "What You Don't Know About Wind Energy.")

Wednesday, May 8, 2013

Safe drinking water disappearing fast in Bangladesh

Bangladesh drinking waterThe availability of safe drinking water, particularly in Bangladesh's hard to reach areas, is expected to worsen as the country experiences the effects of climate change, experts say.

According to a study by the World Bank's water and sanitation programme (pdf), about 28 million Bangladeshis, or just over 20% of the population, are living in harsh conditions in the "hard-to-reach areas" that make up a quarter of the country's landmass. The study found that char – land that emerges from riverbeds as a result of the deposit of

Wednesday, May 1, 2013

Grand Canyon uranium mining set to go ahead despite ban from Obama

Grand CanyonUranium mining on the doorstep of the Grand Canyon national park is set to go ahead in 2015 despite a ban imposed last year by Barack Obama.
Energy Fuels Resources has been given federal approval to reopen its old Canyon Mine, located six miles south of the canyon's popular South Rim entrance, that attracts nearly 5 million visitors a year.