Archive: 9/08/2006

Lake Tahoe Clarity Holds Steady in 2005

The waters of Lake Tahoe were clear to an average depth of 72.4 feet in 2005, according to UC Davis scientists who have monitored the lake since 1968. That keeps the clarity measurement in the range where it has been for ...

dateAug 09, 2006 in Environment
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Study breaks ice on ancient arctic thaw

A new analysis of ocean-floor sediments collected near the North Pole finds that the Arctic was extremely warm, unusually wet and ice-free the last time massive amounts of greenhouse gases were released into the Earth's atmosphere ...

dateAug 09, 2006 in Earth Sciences
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Electricity blackouts: A hot summer topic

It is a common misperception that blackouts are caused by power shortages, but in any given year, about 90 percent of the power outages that customers experience are due to problems with the local distribution network, says ...

dateAug 09, 2006 in Energy & Green Tech
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Evolution of a penis worm

The detailed images of embryos more than 500 million years old have been revealed by an international team of scientists, led by the University of Bristol. Writing in the journal Nature, Dr Phil Donoghue and colleagues reveal ...

dateAug 09, 2006 in Archaeology & Fossils
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