Greedy Routing Enables Network Navigation Without a 'Map'
Feb 17, 2009 |
4.6 / 5 (20) |
6
(PhysOrg.com) -- How does an e-mail get routed so quickly to its recipient's inbox, or a search query generate relevant Web pages from servers from around the world? Navigating the Internet - or any similar ...
Forget the antioxidants? Researchers cast doubt on role of free radicals in aging
Biology /
Feb 17, 2009 |
4.5 / 5 (10) |
5
For more than 40 years, the prevailing explanation of why we get old has been tied to what is called oxidative stress. This theory postulates that when molecules like free radicals, oxygen ions and peroxides build up in cells, ...
Historical photographs expose decline in Florida's reef fish, study finds
Biology /
Feb 17, 2009 |
4.1 / 5 (9) |
5
A unique study by a scientist at Scripps Institution of Oceanography at UC San Diego has provided fresh evidence of fishing's impact on marine ecosystems. Scripps Oceanography graduate student researcher Loren ...
New research shows high-quality protein in eggs contributes to power, strength and energy
Feb 17, 2009 |
4.4 / 5 (8) |
1
A research review published recently in Nutrition Today affirms that the high-quality protein in eggs makes a valuable contribution to muscle strength, provides a source of sustained energy and promotes satiety. High-quality protei ...
Cells with double vision: How one and the same nerve cell reacts to two visual areas
Biology /
Feb 17, 2009 |
5 / 5 (7) |
0
(PhysOrg.com) -- In comparison to many other living creatures, flies tend to be small and their brains, despite their complexity, are quite manageable. Scientists at the Max Planck Institute of Neurobiology ...
Vitamin supplements may protect against noise-induced hearing loss
Feb 17, 2009 |
4.8 / 5 (6) |
0
Vitamin supplements can prevent hearing loss in laboratory animals, according to two new studies, bringing investigators one step closer to the development of a pill that could stave off noise-induced and perhaps even age-related ...
Microbial factories: Researchers harness bacteria to produce energy, clean up environment
Feb 17, 2009 |
3.9 / 5 (7) |
0
(PhysOrg.com) -- In the search for answers to the planet's biggest challenges, some MIT researchers are turning to its tiniest organisms: bacteria.
Web users to write ‘Hitchhiker’s Guide to the Galaxies’
Space & Earth / Space Exploration
Feb 17, 2009 |
4.3 / 5 (6) |
0
(PhysOrg.com) -- Today saw the launch of Galaxy Zoo 2, a website that invites members of the public to help create a detailed guide to some of the Universe's most fascinating objects. The online project is ...
Research identifies how inflammatory disease causes fatigue
Feb 17, 2009 |
4.3 / 5 (6) |
0
New animal research in the February 18 issue of The Journal of Neuroscience may indicate how certain diseases make people feel so tired and listless. Although the brain is usually isolated from the immune ...
Can exercising your brain prevent memory loss?
Feb 17, 2009 |
5 / 5 (5) |
1
Participating in certain mental activities, like reading magazines or crafting in middle age or later in life, may delay or prevent memory loss, according to a study released today that will be presented at the American Academy ...
There's money to be saved in solar
Feb 17, 2009 |
3.4 / 5 (7) |
2
A series of solar panels on the roof converts the sun's rays to electricity, the electricity then flows through cables to the circuit breaker, where it's consumed in the building. The result -- a reduction in energy costs.
When dreaming is believing: Dreams affect people's judgment, behavior
Medicine & Health / Psychology & Psychiatry
Feb 17, 2009 |
4.6 / 5 (5) |
0
While science tries to understand the stuff dreams are made of, humans, from cultures all over the world, continue to believe that dreams contain important hidden truths, according to newly published research.
Engineers tune a nanoscale grating structure to trap and release a variety of light waves
Feb 17, 2009 |
4.6 / 5 (5) |
0
People debating politics are well-advised to shed more light than heat. Engineers working in optical technologies have the same aspiration.
An Inexhaustible Source of Neural Cells
Biology /
Feb 17, 2009 |
4.4 / 5 (5) |
1
(PhysOrg.com) -- Research scientists in Bonn, Germany, have succeeded in deriving so-called brain stem cells from human embryonic stem cells. These can not only be conserved almost indefinitely in culture, but can also serve ...
Enzyme weakens the heart
Feb 17, 2009 |
5 / 5 (4) |
0
An enzyme makes the mouse heart prone to chronic cardiac insufficiency - if it is suppressed, the heart remains strong despite increased stress. Cardiologists at the Internal Medicine Clinic at Heidelberg University Hospital ...
