News tagged with chemical behavior
New CO2-removing catalyst can take the heat
(Phys.org) -- The current method of removing the greenhouse gas carbon dioxide (CO2) from the flues of coal-fired power plants uses so much energy that no one bothers to use it. So says Roger Aines, principal ...
May 24, 2012 |
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'Worm speak' uses chemicals to communicate
(PhysOrg.com) -- A species of small, transparent roundworms have a highly evolved language in which they combine chemical fragments to create precise molecular messages that control social behavior, reports ...
Jan 26, 2012 |
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Worm seeks worm: Researchers find chemical cues driving aggregation in nematodes
(PhysOrg.com) -- Scientists have long seen evidence of social behavior among many species of animals, both on the earth and in the sea. Dolphins frolic together, lions live in packs, and hornets construct ...
Jan 12, 2012 |
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Sneaking up on the glassy transition of water
Rapid cooling of ordinary water or compression of ordinary ice: either of these can transform normal H2O into an exotic substance that resembles glass in its transparency, brittleness, hardness, and luster. Unlike everyday ...
Sep 26, 2011 |
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Methane debate splits Mars community
Observations over the last decade suggest that methane clouds form briefly over Mars during the summer months. The discovery has left many scientists scratching their heads, since it doesn't fit into models ...
Space & Earth / Space Exploration
Sep 13, 2011 |
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Surviving sex with black widows
Scientists have discovered that male black widow spiders, famous for ending up as their mates' post-coital supper, are not as clueless as you might think. In a series of careful experiments, a team of researchers ...
Aug 08, 2011 |
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Scientists discover a chemical signal in human tears
Emotional crying is a universal, uniquely human behavior. When we cry, we clearly send all sorts of emotional signals. In a paper published online today in Science Express, scientists at the Weizmann Instit ...
Medicine & Health / Medical research
Jan 06, 2011 |
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Anti-aphrodisiac protects young bedbugs
Male bedbugs are known to be very unfussy when it comes to mating, mounting any well-fed bug they can see - regardless of age or gender. Researchers writing in the open access journal BMC Biology have discov ...
Sep 09, 2010 |
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Scientists identify nature's insect repellents
In the battle between insect predators and their prey, chemical signals called kairomones serve as an early-warning system. Pervasively emitted by the predators, the compounds are detected by their prey, and can even trigger ...
Jul 16, 2010 |
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Could smell play a role in the origin of new bird species?
Two recently diverged populations of a southern California songbird produce unique odors, suggesting smell could contribute to the reproductive isolation that accompanies the origin of new bird species. The ...
Mar 23, 2010 |
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First Pump-Probe Experiment at Linac Coherent Light Source Completed
(PhysOrg.com) -- The first experiment using the Linac Coherent Light Source to illuminate molecules via a "pump-probe" technique has been completed by an international team of more than 30 scientists from ...
Nov 30, 2009 |
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Study sheds light on brain's fear processing center
Breathing carbon dioxide can trigger panic attacks, but the biological reason for this effect has not been understood. A new study by University of Iowa researchers shows that carbon dioxide increases brain acidity, which ...
Medicine & Health / Medical research
Nov 25, 2009 |
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'Fear detector' being developed
(PhysOrg.com) -- British scientists are aiming to develop a device that can detect the smell of fear, and that could one day identify terrorists, drug smugglers, and other criminals.
Technology / Hi Tech & Innovation
Nov 03, 2009 |
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When ants attack: Researchers recreate chemicals that trigger aggression
(PhysOrg.com) -- Experiments led by researchers at the University of California, Berkeley, have demonstrated that normally friendly ants can turn against each other by exploiting the chemical cues they use ...
Oct 27, 2009 |
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Getting on 'the GABA receptor shuttle' to treat anxiety disorders
There are increasingly precise molecular insights into ways that stress exposure leads to fear and through which fear extinction resolves these fear states. Extinction is generally regarded as new inhibitory learning, but ...
Medicine & Health / Psychology & Psychiatry
Oct 22, 2009 |
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