ScienceDaily: Top Science News |
- Antioxidant supplements seem to increase mortality, review shows
- New light shed on wandering continents
- Scientists wrest partial control of a memory
- Cylinder hides contents and makes them invisible to magnetic fields
- Somatic stem cells obtained from skin cells; pluripotency 'detour' skipped
- Geologists discover new class of landform -- on Mars
- Runaway planets zoom at a fraction of light speed
- New technique lets scientists peer within nanoparticles, see atomic structure in 3-D
- Runner's high motivated the evolution of exercise, research suggests
- Powerful new cells cloned: Key to immune system disease could lie inside the cheek
| Antioxidant supplements seem to increase mortality, review shows Posted: 22 Mar 2012 02:46 PM PDT Previous research on animal and physiological models suggests that antioxidant supplements have beneficial effects that may prolong life. Some observational studies also suggest that antioxidant supplements may prolong life, whereas other observational studies demonstrate neutral or harmful effects. A new review shows that antioxidant supplements seem to increase mortality. The current evidence does not support the use of antioxidant supplements in the general population or in patients with various diseases.  |
| New light shed on wandering continents Posted: 22 Mar 2012 01:19 PM PDT A layer of partially molten rock about 22 to 75 miles underground can't be the only mechanism that allows continents to gradually shift their position over millions of years, according to a new research. The result gives insight into what allows plate tectonics -- the movement of the Earth's crustal plates -- to occur.  |
| Scientists wrest partial control of a memory Posted: 22 Mar 2012 01:12 PM PDT Scientists have successfully harnessed neurons in mouse brains, allowing them to at least partially control a specific memory. Researchers have known for decades that stimulating various regions of the brain can trigger behaviors and even memories. But understanding the way these brain functions develop and occur normally -- effectively how we become who we are -- has been a much more complex goal.  |
| Cylinder hides contents and makes them invisible to magnetic fields Posted: 22 Mar 2012 12:15 PM PDT Researchers have created a cylinder which hides contents and makes them invisible to magnetic fields. The device was built using superconductor and ferromagnetic materials available on the market.  |
| Somatic stem cells obtained from skin cells; pluripotency 'detour' skipped Posted: 22 Mar 2012 10:15 AM PDT Breaking new ground, scientists have succeeded in obtaining somatic stem cells from fully differentiated somatic cells. Researchers in Germany took skin cells from mice and, using a unique combination of growth factors while ensuring appropriate culturing conditions, have managed to induce the cells' differentiation into neuronal somatic stem cells.  |
| Geologists discover new class of landform -- on Mars Posted: 22 Mar 2012 10:13 AM PDT An odd, previously unseen landform could provide a window into the geological history of Mars, according to new research by geologists. They call the structures periodic bedrock ridges.  |
| Runaway planets zoom at a fraction of light speed Posted: 22 Mar 2012 08:36 AM PDT Seven years ago, astronomers boggled when they found the first runaway star flying out of our galaxy at a speed of 1.5 million miles per hour. The discovery intrigued theorists, who wondered: if a star can get tossed outward at such an extreme velocity, could the same thing happen to planets? New research shows that the answer is yes.  |
| New technique lets scientists peer within nanoparticles, see atomic structure in 3-D Posted: 22 Mar 2012 07:04 AM PDT Researchers are now able to peer deep within material science's tiniest structures to create three-dimensional images of individual atoms and their positions. The research presents a new method for directly measuring the atomic structure of nanomaterials.  |
| Runner's high motivated the evolution of exercise, research suggests Posted: 22 Mar 2012 07:03 AM PDT Runners often extol the virtues of the runner's high, but now a team of researchers suggest that the runner's high could have evolved to motivate us to exercise as part of our early long-distance nomadic lifestyle.  |
| Powerful new cells cloned: Key to immune system disease could lie inside the cheek Posted: 21 Mar 2012 07:53 AM PDT Scientists have produced powerful new cells which can suppress the body's immune system. The cells are obtained by cloning tissue lining the human cheek, a less invasive process than obtaining adult stem cells from bone marrow. The breakthrough offers long term hope for dealing with immune system disorders.  |
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