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Solar Geoengineering Could Lead To Whiter, Brighter Skies 165

cylonlover writes "We've heard reports that placing small, reflective particles into the upper atmosphere could actually improve crop yields, but would also significantly reduce the amount of electricity generated by solar power plants and do little to arrest the acidification of the world's oceans. Now another potential side effect has been theorized by Californian researchers, who say that solar geoengineering could lead to brighter, whiter skies, and sunsets with an afterglow (abstract)."

Microsoft Unveils Windows 7 File-Sharing Beta 230

nandemoari writes "Microsoft yesterday released a trial version of new file-sharing software intended for use with its upcoming and highly-anticipated operating system. The new software allows PC users to swap files with the computers of friends, family, and trusted colleagues along safe, secure channels. Dubbed 'Windows Live ID Sign-in Assistant 6.5,' the beta connects the Windows Live IDs of individual users with a Windows 7 account, essentially building a secure link between data stored on a hard drive and information accessible via Windows Live online."

Doctors Will Test Gene Editing On HIV Patients 263

Soychemist writes "Some people have a mutation that makes them highly resistant to HIV, and scientists think that they can give that immunity to anyone with a new type of gene therapy. The first human trials will start at the University of Pennsylvania this week. Researchers will draw blood from people with drug-resistant HIV, clip the CCR5 gene out of their T-cells with a nuclease enzyme, grow the modified cells in a dish, and then return 10 billion of them to the patient's bloodstream. Those cells will be immune to the virus, and they will keep the patient's T-cell count up even if the rest are destroyed. 'We will see if it is safe and if those cells inhibit HIV replication in vivo,' said the lead researcher. 'We know they do in the test tube.'"

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