"Anti-whaling activists are returning to Australia after an engine problem forced them to end this season's Antarctic campaign against Japanese whalers."

"An iceberg the size of Luxembourg knocked loose from the Antarctic continent earlier this month could disrupt the ocean currents driving weather patterns around the globe, researchers said Thursday."

While many scientists think global warming will bring more intense hurricanes, a new scientific paper suggests that the climate system may also work the other way around. Authors looking at data from the Pliocene era say hurricanes may have created a permanent El Nino condition that enhanced warming.

"The United Nations will have an extra round of climate change talks this April in Germany to speed up stalled climate negotiations."

"GM's efforts to sell its Hummer brand to a little-known Chinese company have fallen apart, the U.S. automaker announced Wednesday. As a result, GM will begin to dismantle a brand of gas-guzzling SUVs that were synonymous with pre-financial crisis wealth and excess."

"Istanbul is one of a host of quake-threatened cities in the developing world where populations have swelled far faster than the capacity to house them safely, setting them up for disaster of a scope that could, in some cases, surpass the devastation in Haiti from last month’s earthquake."

"Scientists have discovered an area of the North Atlantic Ocean where plastic debris accumulates. The region is said to compare with the well-documented 'great Pacific garbage patch'."

"Emission cuts pledges made by 60 countries will not be enough to keep the average global temperature rise at 2 degrees Celsius or less, modeling released on Tuesday by the United Nations says."

"A plague of oxygen-deprived waters from the deep ocean is creeping up over the continental shelves off the Pacific Northwest and forcing marine species there to relocate or die."