US,Russia warm up for polar bears
With relations between Russia and the US increasingly frosty,the two countries have quietly joined forces to help polar bears. Two of the five countries where polar bears live,they are now the main allies pushing for greater protection for the bears under a global treaty on endangered species. The impetus may be the increasing danger to polar bears numbering now 20,000-25,000 and the return to presidency of Vladimir V Putin. As prime minister,Putin had travelled to the Arctic in April 2010 and in one of his highly publicised encounters,was photographed tagging a bear with a GPS collar. A US-Russian proposal would grant polar bears the highest level of protection by banning international commercial trade in skins,furs and other items made from bears. Canada and Denmark representing Greenland oppose such a ban. Norway,the fifth country where polar bears live,has not made its stand on the proposed ban public.
Deep beneath,clues to life
A dark realm far beneath the Earths surface is a surprisingly rich home for tiny worms and zombie microbes that may hold clues to the origins of life,scientists have said. It8217;s an amazing new world, said Robert Hazen,head of the Deep Carbon Observatory,a decade-long 500 million project to study the planets carbon,an element vital to life and found in everything from oil to diamonds. Its very possible that there8217;s a deep microbial biosphere that goes down more than 10 km,maybe 20, Hazen said. Microbes have been reported,for instance,in rocks recovered by drilling more than 6 km below the surface in Chinas Songliao basin,he said. The single-celled microbes include bacteria,which need water and nutrients to grow but not necessarily oxygen,and archaea,which can live off compounds such as ammonia or sulphur. A lack of food meant some microbes might be zombies,or so slow-living as to seem dead.