Glaciation News - Earth Science News RSS Feeds from Brightsurf Science NewsEarth Science :: GlaciationGlaciation News Stories, Current Glaciation News Events, Discoveries and Articleshttp://www.brightsurf.com/rss.news.xml?search=Glaciation Glaciation News Stories Current Glaciation News Events, Discoveries and Articles Glaciers Reveal Martian Climate Has Been Recently Active The prevailing thinking is that Mars is a planet whose active climate has been confined to the distant past. About 3.5 billion years ago, the Red Planet had extensive flowing water and then fell quiet - deadly quiet. It didn't seem the climate had changed much since. (2008-04-24) Low oxygen and molybdenum in ancient oceans delayed evolution of life by 2 billion years A deficiency of oxygen and the heavy metal molybdenum in the ancient deep ocean may have delayed the evolution of animal life on Earth by nearly two billion years, a study led by UC Riverside biogeochemists has found. (2008-03-27) Evidence of glaciation in 'super greenhouse' world Large ice-sheets existed on Earth about 91 million years ago, during one of the warmest periods since life began, an international team of scientists reports this week. (2008-01-11) A warming climate can support glacial ice New research challenges the generally accepted belief that substantial ice sheets could not have existed on Earth during past super-warm climate events. (2008-01-11) The sea-ice is getting thinner - A closer look at the climate and ecosystem of the Arctic Ocean Large areas of the Arctic sea-ice are only one metre thick this year, equating to an approximate 50 percent thinning as compared to the year 2001. (2007-09-14) Ice Age survivors in Iceland Many scientists believe that the ice ages exterminated all life on land and in freshwater in large parts of the Northern Hemisphere, especially on ocean islands such as Iceland. (2007-07-20) Melting of the Greenland ice cap may have consequences for climatic change According to two international-research studies on the last ice age, studies with the participation of Dr Rainer Zahn, research professor in the ICREA at the UAB Institute of Environmental Science and Technology (ICTA), before the great ice sheets of the Arctic Ocean began to melt, early sporadic episodes of melting of the old ice sheet which covered the British Isles had already begun to affect the circulation of the ocean currents, which played a key role in the climatic stability of the planet. (2007-05-08) Finding an answer to Darwin's Dilemma The sudden appearance of large animal fossils more than 500 million years ago - a problem that perplexed even Charles Darwin and is commonly known as "Darwin's Dilemma" - may be due to a huge increase of oxygen in the world's oceans, says Queen's paleontologist Guy Narbonne, an expert in the early evolution of animals and their ecosystems. (2006-12-11) Species unique to tidal marshes face threats Tidal marshes cover only about 45,000 square kilometers worldwide-about the area of Denmark. In comparison with other habitats, tidal marshes support few nonaquatic vertebrate species, but their unique characteristics have led to the evolution of species and subspecies that are endemic (found nowhere else). (2006-08-01) Study shows our ancestors survived 'Snowball Earth' It has been 2.3 billion years since Earth's atmosphere became infused with enough oxygen to support life as we know it. About the same time, the planet became encased in ice that some scientists speculate was more than a half-mile deep. (2006-06-07) |
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