Physicists Determine Source of 'Killer' Electrons in Earth's Radiation Belt
Oct 16, 2007 |
4.4 / 5 (68) |
1
Electrons trapped in the outer Van Allen radiation belt, a doughnut-shaped region of high-energy particles that surrounds Earth, kept in place by our planet's magnetic field, can have velocities approaching the speed of light. ...
Bouncing Bucky Balls
Nanotechnology / Nanomaterials
Oct 16, 2007 |
4.2 / 5 (14) |
1
C60 molecules have an intriguing ball-shaped structure that suggests several interesting possibilities for motion on surfaces. Indeed, researchers have found that the passage of electrons through a bucky ball in a transistor ...
Gold nanorods shed light on new approach to fighting cancer
Nanotechnology / Bio & Medicine
Oct 16, 2007 |
4.7 / 5 (25) |
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Researchers have shown how tiny "nanorods" of gold can be triggered by a laser beam to blast holes in the membranes of tumor cells, setting in motion a complex biochemical mechanism that leads to a tumor cell's self-destruction.
Gold nuggets reveal their inner secrets
Space & Earth / Earth Sciences
Oct 16, 2007 |
3.8 / 5 (13) |
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A study of the characteristics of gold nuggets from around Australia has overturned many years of accepted scientific wisdom on how nuggets form.
Science casts doubt on famous British murder case
Oct 16, 2007 |
4.2 / 5 (26) |
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Ninety-seven years after an American was hanged in London in one of the most notorious and famous murder cases in British history, forensic science at Michigan State University is producing evidence that his execution was ...
Researchers measure carbon nanotube interaction
Oct 16, 2007 |
4.4 / 5 (10) |
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Carbon nanotubes have been employed for a variety of uses including composite materials, biosensors, nano-electronic circuits and membranes.
Novel gate dielectric materials: perfection is not enough
Oct 16, 2007 |
4.7 / 5 (9) |
1
For the first time theoretical modeling has provided a glimpse into how promising dielectric materials are able to trap charges, something which may affect the performance of advanced electronic devices. This ...
How schizophrenia develops: Major clues discovered
Oct 16, 2007 |
4.6 / 5 (22) |
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Schizophrenia may occur, in part, because of a problem in an intermittent on/off switch for a gene involved in making a key chemical messenger in the brain, scientists have found in a study of human brain tissue. The researchers ...
NASA Extends Operations for Its Long-Lived Mars Rovers
Space & Earth / Space Exploration
Oct 16, 2007 |
4.5 / 5 (17) |
1
NASA is extending, for a fifth time, the activities of the Mars Exploration Rovers Spirit and Opportunity. The decision keeps the trailblazing mobile robotic pioneers active on opposite sides of Mars, possibly ...
Why are we losing Louisiana?
Space & Earth / Earth Sciences
Oct 16, 2007 |
4.2 / 5 (13) |
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The Mississippi Delta region was losing land long before Hurricane Katrina came ashore. But the correlation between land loss and the risk of flooding in the region is now more evident than ever.
Hubble shows 'baby' galaxy is not so young after all
Oct 16, 2007 |
4.1 / 5 (18) |
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Observations of I Zwicky 18 at the Palomar Observatory around 40 years ago seemed to show that it was one of the youngest galaxies in the nearby Universe. The studies suggested that the galaxy had erupted ...
Researcher tracks genetic journey of HIV from birth to death
Medicine & Health / HIV & AIDS
Oct 16, 2007 |
4.5 / 5 (6) |
1
University of Florida scientists have discovered how HIV evolves over the course of a person’s lifetime into a more deadly form that heralds the onset of full-blown AIDS. The findings could pave the way for new therapeutic ...
No sunglasses required for fish supper
Biology /
Oct 16, 2007 |
4 / 5 (5) |
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Fishermen are always looking for a tasty catch - but it is the fish that have a natural advantage when it comes to spotting dinner, according to new research from The University of Manchester.
Hummocky and shallow Maunder crater
Space & Earth / Space Exploration
Oct 16, 2007 |
3.5 / 5 (4) |
0
The High Resolution Stereo Camera (HRSC) on ESA’s Mars Express orbiter has obtained pictures of the Noachis Terra region on Mars, in particular, the striking Maunder crater.
Insomniac fish shed light on the molecular basis of sleep disorders
Biology /
Oct 16, 2007 |
5 / 5 (1) |
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Sleep disorders are common and poorly understood. In humans, narcolepsy is a sleep disorder associated with sleepiness, abnormal dreaming, paralysis and insomnia. Neuropeptides called hypocretins are implicated ...
