"The U.N. climate chief Yvo de Boer has resigned to join a consultancy group as an adviser, the U.N. climate secretariat said on Thursday, two months after a disappointing Copenhagen summit."

"A long-awaited study by the International Agency for Cancer Research -- an arm of the World Health Organization -- will attempt to give the world's billions of cellphone users a better informed perspective" on whether the phones cause brain tumors or present other health risks.

"Ex-weatherman Anthony Watts says many US weather stations produce unreliable data because they are located next to artificial heat -- but a scientific analysis suggests that, if anything, such stations underestimate warming."

Growing pollution in the Baltic Sea has been making it unswimmable and contaminating fish. Now Russia has sealed a deal to put a pipeline beneath the Baltic -- with big international repercussions.

"A new study says the seas are acidifying ten times faster today than 55 million years ago when a mass extinction of marine species occurred. And, the study concludes, current changes in ocean chemistry due to the burning of fossil fuels may portend a new wave of die-offs."

"Whether it was democracy in action, or defence against malicious attempts to disrupt research, climate scientists were driven to siege mentality by persistence of sceptics."

"Britain and Ethiopia will head a new United Nations panel that aims to secure $100 billion every year by 2020 to help developing nations cut emissions and adapt to climate change, U.N. Secretary-General Ban Ki-moon said on Friday."

"Hopes of an electric car boom are spurring companies to seek new lithium sources, but new finds may be lower quality and costlier to develop than established deposits able to meet demand for years to come."

"A new study published in the Feb. 12 issue of Science indicates that the balance of the world's ice may be shifting faster than scientists thought, which may have consequences in a warming world."