| March 26, 2007 |  |
life as we know it |
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New Evidence Puts Snowball Earth Theory Out In The Cold
LOndon UK (SPX) Mar 26, 2007The theory that Earth once underwent a prolonged time of extreme global freezing has been dealt a blow by new evidence that periods of warmth occurred during this so-called 'Snowball Earth' era. Analyses of glacial sedimentary rocks in Oman, published online today in Geology, have produced clear evidence of hot-cold cycles in the Cryogenian period, roughly 850-544 million years ago. The UK ... more Microfossils Unravel Climate History Of Tropical Africa 
Amsterdam, Holland (SPX) Mar 26, 2007Scientists from the NIOZ Royal Netherlands Institute for Sea Research obtained for the first time a detailed temperature record for tropical central Africa over the past 25,000 years. They did this in cooperation with a German colleague from the University of Bremen, The scientists developed an entirely new method to reconstruct the history of land temperatures based on the molecular fossi ... more Test Finds Manufactured Nanoparticles Don't Harm Soil Ecology 
West Lafayette IN (SPX) Mar 26, 2007The first published study on the environmental impact of manufactured nanoparticles on ordinary soil showed no negative effects, which is contrary to concerns voiced by some that the microscopic particles could be harmful to organisms. Scientists added both dry and water-based forms of manufactured fullerenes - nanosized particles also known as buckyballs - to soil. The nanoparticles didn't change how the soil and its microorganisms functioned, said Ron Turco, a Purdue University soil and environmental microbiologist... more MORE HEADLINES |
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