Why does the brain remember dreams?
Science Daily, February 18, 2014
Some people recall a dream every morning, whereas others rarely recall one. In a new study, research shows that the temporo-parietal junction, an information-processing hub in the brain, is more active in high dream recallers. Increased activity in this brain region might facilitate attention orient...
How evolution shapes the geometries of life
Science Daily, February 18, 2014
An interdisciplinary team re-examined Kleiber''s Law, a famous 80-year-old equation that accurately describes many biological phenomena, although scientists don''t agree on why it works. The team shows that Kleiber''s Law captures the physics and mathematics underlying the evolution of plants'' and ...
Theory on origin of animals challenged: Some animals need extremely little oxygen
Science Daily, February 18, 2014
One of science''s strongest dogmas is that complex life on Earth could only evolve when oxygen levels in the atmosphere rose to close to modern levels. But now studies of a small sea sponge fished out of a Danish fjord shows that complex life does not need high levels of oxygen in order to live and ...
Responding to potential asteroid redirect mission targets
Science Daily, February 17, 2014
One year ago, on Feb. 15, 2013, the world witnessed the dangers presented by near-Earth Objects (NEOs) when a relatively small asteroid entered Earth''s atmosphere, exploding over Chelyabinsk, Russia, and releasing more energy than a large atomic bomb. Tracking near-Earth asteroids has been a signif...
Fertilization destabilizes global grassland ecosystems
Science Daily, February 17, 2014
Fertilization of natural grasslands -- either intentionally or unintentionally as a side effect of global farming and industry -- is having a destabilizing effect on global grassland ecosystems. Using a network of natural grassland research sites around the world called the Nutrient Network, the stu...
Volcanoes, including Mt. Hood, can go from dormant to active in a few months
Science Daily, February 17, 2014
A new study suggests that the magma sitting 4-5 kilometers beneath the surface of Oregon''s Mount Hood has been stored in near-solid conditions for thousands of years, but that the time it takes to liquefy and potentially erupt is surprisingly short -- perhaps as little as a couple of months.
Researchers rejuvenate stem cell population from elderly mice, enabling muscle recovery
Science Daily, February 17, 2014
Researchers have pinpointed why normal aging is accompanied by a diminished ability to regain strength and mobility after muscle injury: over time, stem cells within muscle tissues dedicated to repairing damage become less able to generate new muscle fibers and struggle to self-renew. Scientists ide...
New ''pomegranate-inspired'' design solves problems for lithium-ion batteries
Science Daily, February 17, 2014
A novel battery electrode features silicon nanoparticles clustered like pomegranate seeds in a tough carbon rind. The design could enable smaller, lighter rechargeable batteries for electric cars, cell phones and other devices.
Study on flu evolution may change textbooks, history books
Science Daily, February 17, 2014
A new study reconstructing the evolutionary tree of flu viruses challenges conventional wisdom and solves some of the mysteries surrounding flu outbreaks of historical significance. The study challenges several tenets of conventional wisdom, for example the notion that the virus moves largely unidir...
Long distance signals protect brain from viral infections entering through nose
Science Daily, February 16, 2014
The brain contains a defense system that prevents at least two unrelated viruses -- and possibly many more -- from invading the brain at large.
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