Tree ring records indicate that in 774-775 CE, atmospheric carbon-14 levels increased substantially. Researchers suggest that a solar proton event may have been the cause. In solar proton events, large numbers of high-energy ...
Earth Sciences
Mar 15, 2013
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(Phys.org)—If a nuclear device were to unexpectedly detonate anywhere on Earth, the ensuing effort to find out who made the weapon probably would be led by aircraft rapidly collecting airborne radioactive particles for ...
Engineering
Jan 10, 2013
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How much carbon is stored in the organic soils of tropical wetlands is becoming an important question as erosion, agriculture, and global climate change slowly set into motion a series of processes that could potentially ...
Earth Sciences
Sep 20, 2012
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Name: Khoma. Looks like: A baby mammoth. Age: somewhere above 50,000 years.
Archaeology
Jun 21, 2010
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