Using catalysts to stamp nanopatterns without ink

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Not-to-scale graphic depicts how catalyst (blue hollow-ended beads) dangles from patterned stamp while dye particles (gold balls) are bonded to DNA chains to make DNA coating visible. After stamp (blue) presses into DNA coating (yellow) at center the ...
Not-to-scale graphic depicts how catalyst (blue hollow-ended beads) dangles from patterned stamp, while dye particles (gold balls) are bonded to DNA chains to make DNA coating visible. After stamp (blue) presses into DNA coating (yellow) at center the catalyst detaches dye and DNA chain's tip (bottom right). That disruption creates patterning in DNA coating (top right). Graphic by Alexander Shestopalov

Using enzymes from E. coli bacteria, Duke University chemists and engineers have introduced a hundred-fold improvement in the precision of features imprinted to create microdevices such as labs-on-a-hip.


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Fossil feathers preserve evidence of color

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How about this for the next instalment of the Indy franchise: "Indiana Jones and the Dodgy Antiques Dealer"?

Milwaukee museum unveils woolly mammoth skeleton

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(AP) -- A 14,500-year-old woolly mammoth skeleton dug up in 1994 has been unveiled at the Milwaukee Public Museum, giving locals a glimpse of perhaps the most intact specimen discovered in North America.
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