Dark Energy Found Stifling Growth in Universe
Dec 16, 2008 |
4.3 / 5 (40) |
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(PhysOrg.com) -- For the first time, astronomers have clearly seen the effects of "dark energy" on the most massive collapsed objects in the universe using NASA's Chandra X-ray Observatory. By tracking how ...
Researchers interpret asymmetry in early universe
Dec 16, 2008 |
4.3 / 5 (35) |
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(PhysOrg.com) -- The Big Bang is widely considered to have obliterated any trace of what came before. Now, astrophysicists at the California Institute of Technology (Caltech) think that their new theoretical ...
Semiconductor Lasers Generate Better Random Numbers
Dec 16, 2008 |
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(PhysOrg.com) -- Random numbers -- numbers without any pattern -- are vital to many applications, such as computer simulations, statistics, and cryptography. There are many ways to generate them using unpredictable physical ...
Scientists print dense lattice of transparent nanotube transistors on flexible base
Nanotechnology / Nanomaterials
Dec 16, 2008 |
4.9 / 5 (28) |
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It's a clear, colorless disk about 5 inches in diameter that bends and twists like a playing card, with a lattice of more than 20,000 nanotube transistors capable of high-performance electronics printed upon ...
Researchers discover new way men can transmit HIV to women
Medicine & Health / HIV & AIDS
Dec 16, 2008 |
4.4 / 5 (29) |
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Researchers at Northwestern University have discovered a critical new way a man can transmit the HIV virus to a woman.
Scientists fool bacteria into killing themselves to survive
Biology /
Dec 16, 2008 |
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(PhysOrg.com) -- Like firemen fighting fire with fire, researchers at the University of Illinois and the University of Massachusetts at Amherst have found a way to fool a bacteria's evolutionary machinery ...
Cookie cutter in the sky: Seeing the shape of material around black holes for first time
Dec 16, 2008 |
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Black holes can now be thought of as donut holes. The shape of material around black holes has been seen for the first time: an analysis of over 200 active galactic nuclei—cores of galaxies powered by disks ...
Solving a 300 year old geology problem using kitchen materials
Dec 16, 2008 |
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(PhysOrg.com) -- Physicists at the University of Toronto have cracked the mystery behind the strange and uncannily well-ordered hexagonal columns found at such popular tourist sites as Northern Ireland's Giant's ...
Going outside -- even in the cold -- improves memory, attention
Dec 16, 2008 |
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(PhysOrg.com) -- Go outside: It helps improve your focus—even when it's cold out. University of Michigan psychology research in the December issue of Psychological Science explored the cognitive benefits of interacting with n ...
Sun Often 'Tears Out A Wall' In Earth's Solar Storm Shield
Space & Earth / Earth Sciences
Dec 16, 2008 |
4.5 / 5 (20) |
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(PhysOrg.com) -- Earth's magnetic field, which shields our planet from particles streaming outward from the Sun, often develops two holes that allow the largest leaks, according to researchers sponsored by ...
Magma Discovered in Situ for First Time
Space & Earth / Earth Sciences
Dec 16, 2008 |
4.8 / 5 (17) |
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(PhysOrg.com) -- A crew drilling on the Big Island of Hawaii has discovered magma, the molten rock material — never before found in its natural habitat underground — that is the central ingredient in the evolution of planets ...
Economists: Ancestral history explains roots of income inequality
Dec 16, 2008 |
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Two Brown University economists have created a new data set explaining differences in the world's current per capita gross domestic products (GDPs). In a National Bureau of Economic Research working paper, ...
A low dose of caffeine when pregnant may damage the heart of offspring for a lifetime
Dec 16, 2008 |
4.3 / 5 (18) |
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A new study published online in The FASEB Journal shows that the equivalent of one dose of caffeine (just two cups of coffee) ingested during pregnancy may be enough to affect fetal heart development and then reduce heart ...
Researchers revisit male bisexuality
Dec 16, 2008 |
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The landmark "Sexual Behavior in the Human Male" report revealed major insights into bisexual behavior and orientation -- without even using the word "bisexual" -- when it was published 60 years ago by pioneering ...
Old and young brains rely on different systems to remember emotional content
Medicine & Health / Psychology & Psychiatry
Dec 16, 2008 |
4.8 / 5 (14) |
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Neuroscientists from Duke University Medical Center have discovered that older people use their brains differently than younger people when it comes to storing memories, particularly those associated with negative emotions.
