Crows can use 'up to three tools'
Aug 05, 2009 |
4.9 / 5 (30) |
23
(PhysOrg.com) -- New experiments by Oxford University scientists reveal that New Caledonian crows can spontaneously use up to three tools in the correct sequence to achieve a goal, something never before observed ...
Popular insect repellent deet affects nervous system: study
Aug 05, 2009 |
4.6 / 5 (16) |
9
The active ingredient in many insect repellents, deet, has been found to be toxic to the central nervous system. Researchers writing in the open access journal BMC Biology say that more investigations are urgently needed ...
On the move: 'Jumping genes' create diversity in human brain cells
Aug 05, 2009 |
5 / 5 (14) |
3
Rather than sticking to a single DNA script, human brain cells harbor astonishing genomic variability, according to scientists at the Salk Institute for Biological Studies. The findings, to be published in ...
Growing evidence of marijuana smoke's potential dangers
Aug 05, 2009 |
2.3 / 5 (29) |
18
In a finding that challenges the increasingly popular belief that smoking marijuana is less harmful to health than smoking tobacco, researchers in Canada are reporting that smoking marijuana, like smoking ...
Obama announces $2.4 bln grant for electric vehicles
Aug 05, 2009 |
4.1 / 5 (13) |
10
President Barack Obama Wednesday unveiled a 2.4-billion-dollar funding boost for the development of new generation electric vehicles and slammed critics of his economic rescue plans.
Researchers find quantum errors do compute
Aug 05, 2009 |
4.3 / 5 (12) |
1
(PhysOrg.com) -- Physicists from The University of Queensland have found the emerging field of quantum computing may be more stable than previously thought.
Climate change poker: The barriers which are preventing a global agreement
Aug 05, 2009 |
4 / 5 (12) |
5
As the world's environment ministers, government officials, diplomats and campaigners prepare to attend the COP15 conference in Copenhagen in December 2009 to unite in the battle against climate change in ...
3.2-Million-Year Temperature History from Tiny Fossils
Space & Earth / Earth Sciences
Aug 05, 2009 |
3.8 / 5 (12) |
5
(PhysOrg.com) -- People often talk about greenhouse gases and their effect on the earth's climate as if those effects were new. But greenhouse gases have been around for hundreds of millennia, playing a key ...
Bringing solar power to the masses
Aug 05, 2009 |
4 / 5 (11) |
2
On a 104-degree Friday in July when sunlight bathed The University of Arizona campus, doctoral student Dio Placencia sat before a noisy vacuum chamber in the Chemical Sciences Building trying to advance the renewable energy ...
Seeing the Cosmos Through 'Warm' Infrared Eyes
Aug 05, 2009 |
4.7 / 5 (9) |
1
(PhysOrg.com) -- NASA's Spitzer Space Telescope has taken its first shots of the cosmos since warming up and starting its second career. The infrared telescope ran out of coolant on May 15, 2009, more than ...
Double engine for a nebula
Aug 05, 2009 |
4.6 / 5 (9) |
8
(PhysOrg.com) -- The new image, showing a very rich field of stars towards the Carina arm of the Milky Way, is centred on the star HD 87643, a member of the exotic class of B[e] stars [1]. It is part of a ...
Researchers decode structure of an entire HIV genome
Medicine & Health / HIV & AIDS
Aug 05, 2009 |
5 / 5 (8) |
0
The structure of an entire HIV genome has been decoded for the first time by researchers at the University of North Carolina at Chapel Hill. The results have widespread implications for understanding the strategies ...
Scary ancient spiders revealed in 3-D models, thanks to new imaging technique (w/ Video)
Aug 05, 2009 |
4.9 / 5 (8) |
0
Early relatives of spiders that lived around 300 million years ago are revealed in new three-dimensional models, in research published today in the journal Biology Letters.
Astronomers Find Hyperactive Galaxies in the Early Universe
Aug 05, 2009 |
4.6 / 5 (8) |
22
(PhysOrg.com) -- Looking almost 11 billion years into the past, astronomers have measured the motions of stars for the first time in a very distant galaxy and clocked speeds upwards of one million miles per ...
New research sheds light on freak wave hot spots
Aug 05, 2009 |
4.3 / 5 (8) |
6
Stories of ships mysteriously sent to watery graves by sudden, giant waves have long puzzled scientists and sailors. New research by San Francisco State professor Tim Janssen suggests that changes in water depth and currents, ...
