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Science

Submission + - Nanoparticles heated by radio waves switch on genes in mice (nature.com)

ananyo writes: Researchers have used radio waves to remotely activate engineered insulin-producing genes in mice. In the long term, the work could lead to medical procedures in which patients’ genes are triggered on demand.
The researchers coated coated iron oxide nanoparticles with antibodies that bind to a modified version of a temperature-sensitive ion channel. They injected these particles into tumors grown under the skins of mice, then heated the nanoparticles with low-frequency radio waves. The nanoparticles heated the ion channel, activating it and allowing calcium to flow into cells. The influx of calcium switched on an engineered calcium-sensitive gene that produces insulin (abstract).

Censorship

Submission + - Pirate Bay, IsoHunt blocked in India (bayimg.com)

unmole writes: "It seems that India's Department of Telecom has instructed ISP's to block popular torrent trackers like the Pirate Bay and IsoHunt. Visitors now see a page (Screenshot: http://bayimg.com/PaoFFaaDg) informing that "This site has been blocked as per instructions from Department of Telecom (DOT) .", with no additional details. The Department of Telecom has not made any public announcement to this effect. This comes months after "an Indian court gave the green signal for prosecuting social networking sites (http://yro.slashdot.org/story/12/01/14/1257223/india-oks-censoring-facebook-google-microsoft-yahoo)."
Security

Feds Tighten DNS Security On .Gov 140

alphadogg writes "When you file your taxes online, you want to be sure that the Web site you visit — www.irs.gov — is operated by the Internal Revenue Service and not a scam artist. By the end of next year, you can be confident that every U.S. government Web page is being served up by the appropriate agency. That's because the feds have launched the largest-ever rollout of a new authentication mechanism for the Internet's DNS. All federal agencies are deploying DNS Security Extensions (DNSSEC) on the .gov top-level domain, and some expect that once that rollout is complete, banks and other businesses might be encouraged to follow suit for their sites. DNSSEC prevents hackers from hijacking Web traffic and redirecting it to bogus sites. The Internet standard prevents spoofing attacks by allowing Web sites to verify their domain names and corresponding IP addresses using digital signatures and public-key encryption."

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