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Ice Tubes in Polar Seas -- 'Brinicles' or 'Sea Stalactites' -- Provide Clues to Origin of Life
April 24, 2013 — Life on Earth may have originated not in warm tropical seas, but with weird tubes of ice -- sometimes called "sea stalactites" -- that grow downward into cold seawater near the Earth's poles, ... > full story -
Sunlit Snow Triggers Atmospheric Cleaning, Ozone Depletion in the Arctic
April 24, 2013 — Researchers have discovered that sunlit snow is the major source of atmospheric bromine in the Arctic, the key to unique chemical reactions that purge pollutants and destroy ... > full story -
Ancient DNA Reveals Europe's Dynamic Genetic History
April 23, 2013 — Ancient DNA recovered from a series of skeletons in central Germany up to 7,500 years old has been used to reconstruct the first detailed genetic history of modern ... > full story -
Iron in Primeval Seas Rusted by Bacteria
April 23, 2013 — Researchers have been able to show for the first time how microorganisms contributed to the formation of the world's biggest iron ore deposits. The biggest known deposits -- in South Africa and ... > full story -
Geochemical Method Finds Links Between Terrestrial Climate and Atmospheric Carbon Dioxide
April 22, 2013 — Scientists used a new chemical technique to measure the change in terrestrial temperature associated with a major shift in global atmospheric CO2 concentrations nearly 34 million years ago. Their ... > full story -
Earth's Current Warmth Not Seen in the Last 1,400 Years or More, Says Study
April 22, 2013 — Fueled by industrial greenhouse gas emissions, Earth's climate warmed more between 1971 and 2000 than during any other three-decade interval in the last 1,400 years, according to new regional ... > full story -
Prehistoric Metalwork Discovered at Iron Age Site, Along With Gaming Pieces
April 22, 2013 — Archaeologists from the University of Leicester in the UK have uncovered one of the biggest groups of Iron Age metal artefacts to be found in the region -- in addition to finding dice and gaming ... > full story -
First 2,000-Year-Long Temperature Reconstructions for Individual Continents
April 21, 2013 — Past climate change varied remarkably between regions. This is demonstrated in a new study coordinated by the international Past Global Changes (PAGES) project, which reconstructed temperature over ... > full story -
Remote-Sensing Study Quantifies Permafrost Degradation in Arctic Alaskan Wetlands
April 18, 2013 — Geoscientists has achieved unprecedented detail in quantifying subtle, long-period changes in the water levels of shallow lakes and ponds in hard-to-reach Arctic ... > full story -
Sea-Ice Ecosystem Possibly Triggered Evolution of Baleen Whales and Penguins
April 18, 2013 — The origin of the unique plankton ecosystem of the circum-Antarctic Southern Ocean can be traced back to the emergence of the Antarctic ice sheets approximately 33.6 million years ago. This discovery ... > full story
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