In just six years, bacteria in the genus Rickettsia spread through a population of the sweet potato whitefly (Bemisia tabaci), an invasive pest of global importance. Infected insects lay more eggs, develop faster and are ...
Plants & Animals
Apr 7, 2011
1
0
For the first time, scientists have found convincing evidence for the presence of liquid water in a comet, shattering the current paradigm that comets never get warm enough to melt the ice that makes up the bulk of their ...
Space Exploration
Apr 5, 2011
5
0
Philosophers have argued for centuries, millennia actually, about whether our lives are guided by our own free will or are predetermined as the result of a continuous chain of events over which we have no control.
Social Sciences
Mar 17, 2011
219
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(PhysOrg.com) -- Graphene, the material that makes up pencil "lead," could someday make electronic devices smaller, faster and more energy-efficient. Providing the first detailed analysis of graphene on boron nitride, a UA-led ...
Nanomaterials
Mar 1, 2011
2
0
(PhysOrg.com) -- While enthusiasts across the world pored over the Voynich manuscript, one of the most mysterious writings ever found – penned by an unknown author in a language no one understands – a research team ...
Archaeology
Feb 10, 2011
64
2
Mysterious dark sand dunes around Mars' northern polar cap are shifting with the seasons, as carbon dioxide gas changes form and sparks landscape-altering avalanches, said a study published Thursday.
Space Exploration
Feb 3, 2011
7
0
(PhysOrg.com) -- University of Arizona physicists have discovered a new way to measure how single atoms interact with a surface. Their findings help develop nanotechnology and test new theories about the internal structure ...
General Physics
Jan 17, 2011
14
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(PhysOrg.com) -- University of Arizona scientists have inserted metal atoms into methane gas molecules and obtained a detailed structure of the resulting molecule. The discovery could be a key step in making hydrocarbons ...
Materials Science
Dec 20, 2010
2
0
Remember the Star Wars scene in which R2D2 projects a three-dimensional image of a troubled Princess Leia delivering a call for help to Luke Skywalker and his allies? What used to be science fiction is now close to becoming ...
Optics & Photonics
Nov 3, 2010
8
0
(PhysOrg.com) -- University of Arizona physicists have discovered a new way of harvesting waste heat and turning it into electrical power. Taking advantage of quantum effects, the technology holds great promise for making ...
Nanophysics
Sep 24, 2010
35
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