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CNNMoney: Boone Pickens buys 667 GE wind turbines

A renewable energy company founded by billionaire T. Boone Pickens says it's buying 667 wind turbines from General Electric.

Fortune: A $3 trillion climate change battle

A climate-change bill that has widespread support as it heads to the Senate floor will create an estimated $150 billion of new assets in the first year it takes effect. Between now and 2050, regulating greenhouse gases could easily generate $3 trillion worth in value in the United States.

140-year-old baby used to be a star

Astronomers have discovered the youngest known supernova in the Milky Way galaxy, still a baby at 140 years old.

Time.com: US: Polar Bear a Threatened Species

(WASHINGTON) -- The Interior Department declared the polar bear a threatened species Wednesday, saying it must be protected because of the decline in Arctic sea ice from global warming.Interior Secretary Dirk Kempthorne cited dramatic declines in sea ice over the last three decades and projections of continued losses. These declines, he told a news conference, mean the polar bear is a species likely to be in danger of extinction in the near future.Kempthorne also said, though, that it would be "inappropriate" to use the protection of the bear to reduce greenhouse gases, or to broadly address climate change.Reflecting views recently expressed by President Bush, Kempthorne said the Endangered Species Act was "never meant to regulate global climate change."He said the decision to list the bear includes administrative actions aimed at limiting the impact of the decision on energy development and other climate related activities."This listing will not stop global climate change or prevent any sea ice from melt

CNNMoney: Tiny Smart car gets crash test kudos

The ultra-tiny Smart ForTwo earned top marks in side and front crash tests, the Insurance Institute for Highway Safety said Wednesday. The two-seat car did not earn the Institute's Top Safety Pick designation, however, because it didn't earn top marks for whiplash protection.

Time.com: McCain's Gift to the Green Movement

The GOP candidate's global warming plan has its flaws. But he has engaged the issue, and that bodes well for the '08 campaign

A timeline of climate change science

Climatology was once a small and often overlooked branch of science. But important discoveries made as early as the 19th century have contributed to what is the most important field of scientific study in the world today. Listed below are some key dates in climate change history.

Landlines go dead as more users rely on cell phones

For nearly three in 10 households, don't even bother trying to call them on a landline phone. They either only have a cell phone or seldom if ever take calls on their traditional phone.

MySpace wins $230 million in Internet spam case

The popular online hangout MySpace has won a $230 million judgment over junk messages sent to its members in what is believed to be the largest anti-spam award ever.

McCain: Clean energy a 'national security issue'

Sen. John McCain took his weeklong environmental tour to Washington state Tuesday, addressing the need for reducing the nation's dependency on foreign oil and sparking investment in environmentally friendly technology.

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