Graphene is the two-dimensional crystalline form of carbon: a single layer of carbon atoms arranged in hexagons, like a sheet of chicken wire with an atom at each nexus. As free-standing objects, such two-dimensional crystals ...
General Physics
Jun 8, 2008
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A single organ may contain more than one type of adult stem cell – a discovery that complicates prospects for using the versatile cells to replace damaged tissue as a treatment for disease, according to a new study from ...
Jun 8, 2008
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For the first time paleontologists have found fossilized burrows of tetrapods – any land vertebrates with four legs or leglike appendages – in Antarctica dating from the Early Triassic epoch, about 245 million years ago.
Archaeology
Jun 8, 2008
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