6,896 results
6,896 results for: Bears
- Animals
Carnivores in Captivity: Size of range in wild may predict risk in zoo
A survey of zoo reports of troubled animals suggests that the minimum size of a species' range predicts how well it will adapt to captivity.
- Earth
North vs. Northwest: Lewis and Clark diaries provide directional clue
Observations from the Lewis and Clark expedition may offer insight into Earth's magnetic field.
- Tech
Special Delivery: Metallic nanorods shuttle genes
A new gene therapy technique relies on nanorods made of gold and nickel to deliver genes to cells in the body.
- Earth
Cast-Iron Foot: Undersea snail has mineral armor
An as-yet-unnamed species of snail living around hydrothermal vents deep beneath the Indian Ocean bears a suit of armor forged from the minerals dissolved in the hot fluids that spew from its seafloor environment.
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Calcium Makes Germs Cluster: Ion dilution leads cholera bacteria to disperse
A protein on the surface of cholera-causing bacteria enables the pathogens to clump together in seawater and to scatter when they enter fresh water, perhaps facilitating seasonal outbreaks of cholera in coastal areas.
- Earth
Pieces of a Pulverizer? Sediment fragments may be from killer space rock
Scientists sifting sediments laid down just after Earth's most devastating mass extinction 250 million years ago may have found minuscule fragments of the extraterrestrial object that caused the catastrophe.
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Protein Portal: Enzyme acts as door for the SARS virus
A protein that regulates blood pressure also serves as the cellular portal for the SARS virus.
- Earth
Ash Clouds: Severe storms can lift smoke into stratosphere
New field observations, satellite images, and computer models suggest that a severe thunderstorm, enhanced by heat from forest fires, can boost soot, smoke, and other particles as far as the lower stratosphere, an unexpected phenomenon.
- Earth
Ash Clouds: Severe storms can lift smoke into stratosphere
New field observations, satellite images, and computer models suggest that a severe thunderstorm, enhanced by heat from forest fires, can boost soot, smoke, and other particles as far as the lower stratosphere, an unexpected phenomenon.
- Astronomy
Cradled galaxies betray violent past
Hubble snaps ‘the Penguin’ and its egg-shaped companion.
- Life
Ancient horse’s DNA fills in picture of equine evolution
An entire genome compiled from a 700,000-year-old bone yields new information about equine history.
- Genetics
Technique inactivates Down-causing chromosome
Though far from a cure, the advance could eventually lead to gene therapy that alleviates some symptoms.
