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Zothecula writes
By cladding a living cell with graphene quantum dots, researchers at the University of Illinois at Chicago (UIC) claim to have created a nanoscale biomicrorobot (or cytobot) that responds electrically to changes in its environment. This work promises to lay the foundations for future generations of bio-derived nanobots, biomicrorobotic-mechanisms, and micromechanical actuation for a wide range of applications. "UIC researchers created an electromechanical device — a humidity sensor — on a bacterial spore. They call it NERD, for Nano-Electro-Robotic Device. The report is online at Scientific Reports, a Nature open access journal."
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BarbaraHudson (3785311) writes
In Jurassic Park, scientists tweak dinosaur DNA so that the dinosaurs were lysine-deficient in order to keep them from spreading in the wild. Scientists have taken this one step further as a way to keep genetically modified E. coli from surviving outside the lab.
In modifying the bacteria's DNA to thwart escape, two teams altered the genetic code to require amino acids not found in nature. One team modified the genes that coded for proteins crucial to cell functions so that that produced proteins required the presence of the synthetic amino acid in the protein itself. The other team focused on 22 genes deemed essential to a bacterial cell's functions and tied the genes' expression to the presence of synthetic amino acids.
For the bacteria to survive, these synthetic amino acids had to be present in the medium on which the bacteria fed. In both cases, the number of escapees was so small as to be undetectable."
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CWmike writes
"Users should wait for Microsoft to work out the bugs in Windows 7 before jumping on the new OS, computer support company Rescuecom said on Friday. 'From the calls we're getting, as well as our own experience in the past with all Microsoft's operating systems, we're recommending that people stick with their time-tested OS and wait for the dust to settle,' said Josh Kaplan, president of Rescuecom. Citing a litany of reasons, ranging from the risk of losing data during an upgrade to tough economic times, Kaplan urged Windows users to put off upgrading to Windows 7 or buying a new PC with the operating system pre-installed. 'There are some compelling reasons for both businesses and home users to move to Windows 7,' Kaplan said, 'so we're saying "just wait for a bit."' Upgrading an existing machine — whether it's running the eight-year-old Windows XP or the much newer Vista — is particularly risky, he added, especially if users haven't taken time to make a full backup before they migrate their machines. Some users have found that out first hand. Among the top subjects on Microsoft's support forum is one that has put some PCs into an endless reboot loop when their owners tried to upgrade from Vista to Windows 7. Microsoft has not yet come up with a solution that works for all the users who have reported the problem, sparking frustration."
