6,871 results
6,871 results for: Bears
- Ecosystems
Deprived of Darkness
From anecdotal reports of little-studied phenomena, researchers suspect that artificial night lighting disrupts the physiology and behavior of nocturnal animals.
- Animals
Poison birds copy ‘don’t touch’ feathers
A subspecies of one of New Guinea's poisonous pitohui birds may be mimicking a toxic neighbor, according to a new genetic analysis.
- Chemistry
The True Sweet Science
New techniques and tools are helping scientists elucidate the roles that complex sugars play in the human body and in drug manufacturing.
- Planetary Science
Exploring the Red Planet
Searching for signs of subsurface water on the Red Planet and analyzing the elemental and mineral composition of surface rock, NASA's Mars Odyssey spacecraft begins its main mapping mission next month and may shed light on several enduring puzzles about the planet.
- Earth
Beefy Losses
Cattle ranchers are facing some puzzling–and, at times, economically devastating–problems with pregnant cows and calves. At some facilities, high numbers of fetuses are aborting for no apparent reason. Other farmers successfully raise what look to be normal young cattle, only to learn when the animals are butchered that their carcasses appear old and, therefore, less […]
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Repression tries for experimental comeback
A laboratory experiment finds that people have difficulty remembering words that they have intentionally tried to forget, providing support for Sigmund Freud's controversial concept of repression.
- Astronomy
Faint body may be galaxy building block
Using a cosmic zoom lens, astronomers may have found one of the first building blocks of a galaxy in the universe.
- Animals
Rebranding the Hyena
Zoologists are hoping that long-term ecological studies of the spotted hyena will assist in dispelling the animal's undeservedly bad reputation.
- Math
The Math Hatter and More
Looking for a cool gift for someone mathematically inclined? An unusual, conversation-generating token of appreciation? The World Wide Web offers a number of intriguing possibilities–if you know where to stop and shop. Metro cars in action. Smart Mouth letter dispenser. Original Stonehenge watch. A little ad in a mathematics newsletter recently alerted me to the […]
- Math
The Math Hatter and More
Looking for a cool gift for someone mathematically inclined? An unusual, conversation-generating token of appreciation? The World Wide Web offers a number of intriguing possibilities–if you know where to stop and shop. Metro cars in action. Smart Mouth letter dispenser. Original Stonehenge watch. A little ad in a mathematics newsletter recently alerted me to the […]
- Paleontology
New fossil sheds light on dinosaurs’ diet
Vestiges of soft tissue preserved in a 70-million-year-old Mongolian fossil suggest that some dinosaurs could have strained small bits of food from the water and mud of streams and ponds, just like some modern aquatic birds do.
- Earth
Fire Retardant Catfish?
It may sound like a barbecue chefs dream: fish that wont catch fire and char when their fat spatters onto overly hot charcoal. But the facts are less appealing. Although many U.S. fish contain fire retardants, they wont protect your grilled fare from burning. In fact, these compounds, which go by the name of polybrominated […]
