Oil industry chiefs say it is too early to conclude what caused the disaster.
The UN warned on Monday that "massive" loss in life-sustaining natural environments was likely to deepen to the point of being irreversible after global targets to cut the decline by this year were missed.
As a result of the degradation, the world is moving closer to several "tipping points" beyond which some ecosystems that play a part in natural processes such as climate or the food chain may be permanently damaged, a United Nations report said.
In a letter published in the journal Science, more than 250 members of the US National Academy of Sciences, including 11 Nobel Prize laureates, condemned the increase in "political assaults" on scientists who argue greenhouse gas emissions are warming the planet.
The 'climategate' scandal and mistakes by the Intergovernmental Panel on Climate Change (IPCC) have led to a surge in attacks on climate scientists around the world.
The decision on whether to use chemical dispersants deep below the sea's surface to break up the Gulf of Mexico oil spill boils down to two central questions:
Is it worth taking this unprecedented step to protect the region's sensitive and ecologically valuable wetlands, even at the potential expense of its marine life? And should federal officials conduct extensive new research before making the leap, since the scientific literature on this question is so sparse?
Over 170 businesses from around the country sent a letter to Senate Majority Leader Reid and his Senate colleagues today calling on the Senate to continue working to enact comprehensive climate and energy legislation this year. The letter was brought together by the We Can Lead coalition, a project of the Clean Economy Network (CEN) and Ceres.
The global financial crisis will condemn about 53 million more people to extreme poverty and contribute to 1.2 million child deaths in the next five years, according to the World Bank and International Monetary Fund (IMF).
More than one billion people, or one-in-six people on the planet, are struggling to meet basic food needs, leading to disease - and ultimately death - in many young children and pregnant women, a report, published on Friday, said.
A ban on commercial whale hunting since 1986 hasn't stopped Japan, Iceland and Norway from killing 35,000 whales, according to U.S. government counts. Now the International Whaling Commission has proposed a new approach — legalize whaling for those three nations for the next 10 years, but impose limits and watch the whalers more carefully.
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