ScienceDaily: Top Science News

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• 'Rock dissolving' method of geoengineering to mitigate climate change would not be easy
• New way to kill lymphoma without chemotherapy: Golden nanoparticle starves cancer cell to death
• A relative from the Tianyuan Cave: Humans living 40,000 years ago likely related to many present-day Asians and Native Americans
• How cells' DNA repair machinery can destroy viruses
• Longer CPR improves survival in both chidren and adults
• Did an 8th century gamma ray burst irradiate Earth?
• New evidence indicates auroras occur outside our solar system
• Scientists describe a 'new' type of volcanic eruption
• Cotton with special coating collects water from fogs in desert
• Ultra-small devices for energy-efficient electronics

'Rock dissolving' method of geoengineering to mitigate climate change would not be easy Posted: 21 Jan 2013 04:20 PM PST The benefits and side effects of dissolving particles in our ocean's surfaces to increase the marine uptake of carbon dioxide, and therefore reduce the excess amount of it in the atmosphere, have been analyzed in a new study. Researchers calculate that if three gigatons of olivine were deposited into the oceans each year, it could compensate for only around nine per cent of present day anthropogenic CO2 emissions.

New way to kill lymphoma without chemotherapy: Golden nanoparticle starves cancer cell to death Posted: 21 Jan 2013 01:19 PM PST Scientists annihilated lymphoma by depriving it of a favorite food: HDL cholesterol. Researchers developed a new golden nanoparticle that's a replica of natural HDL. Acting like a secret double agent, the particle appears to the human lymphoma cell like natural HDL. But when the cell engages it, the particle plugs up the cell and blocks cholesterol from entering. The cell dies.

A relative from the Tianyuan Cave: Humans living 40,000 years ago likely related to many present-day Asians and Native Americans Posted: 21 Jan 2013 01:18 PM PST Ancient DNA has revealed that humans living some 40,000 years ago in the area near Beijing were likely related to many present-day Asians and Native Americans.

How cells' DNA repair machinery can destroy viruses Posted: 21 Jan 2013 01:17 PM PST Researchers have decoded a system that makes certain types of immune cells impervious to HIV infection. The system's two vital components are high levels of a molecule that becomes embedded in viral DNA like a code written in invisible ink, and an enzyme that, when it reads the code, switches from repairing the DNA to chopping it up into unusable pieces.

Longer CPR improves survival in both chidren and adults Posted: 21 Jan 2013 01:17 PM PST Two large national U.S. studies show that extending CPR longer than previously thought useful saves lives in both children and adults. Research teams analyzed impact of duration of cardiopulmonary resuscitation in patients who suffered cardiac arrest while hospitalized.

Did an 8th century gamma ray burst irradiate Earth? Posted: 21 Jan 2013 05:32 AM PST A nearby short duration gamma-ray burst may be the cause of an intense blast of high-energy radiation that hit the Earth in the 8th century, according to new research.

New evidence indicates auroras occur outside our solar system Posted: 21 Jan 2013 05:32 AM PST Planetary scientists have found new evidence suggesting auroras – similar to Earth's Aurora Borealis - occur on bodies outside our solar system.

Scientists describe a 'new' type of volcanic eruption Posted: 21 Jan 2013 05:32 AM PST Scientists based in the UK and New Zealand have described a "new" type of volcanic eruption. Volcanic eruptions are commonly categorized as either explosive or effusive. But now, researchers have uncovered a previously undocumented type of eruption in underwater volcanoes – by looking at tiny original bubble spaces trapped in volcanic rock.

Cotton with special coating collects water from fogs in desert Posted: 21 Jan 2013 05:30 AM PST Researchers have developed a special treatment for cotton fabric that allows the cotton to absorb exceptional amounts of water from misty air: 340% of its own weight. What makes this 'coated cotton' so interesting is that the cotton releases the collected water by itself, as it gets warmer. This property makes of the coated cotton materials a potential solution to provide water to the desert regions, for example for agricultural purposes.

Ultra-small devices for energy-efficient electronics Posted: 21 Jan 2013 05:30 AM PST Scientists have designed and fabricated ultra-small devices for energy-efficient electronics. By finding out how molecules behave in these devices, a ten-fold increase in switching efficiency was obtained by changing just one carbon atom. These devices could provide new ways to combat overheating in mobile phones and laptops, and could also aid in electrical stimulation of tissue repair for wound healing.

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