6,775 results
6,775 results for: Bears
- 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.
-
Don’t Let the Bugs Bite
Using disease-control strategies based on genetic engineering, scientists are working to counter Chagas' disease, malaria, sleeping sickness, and other insectborne infections.
- Physics
Two New Elements Made: Atom smashups yield 113 and 115
Two new elements—115 and 113—have joined the periodic table.
- Plants
Smokey the Gardener
Wildfire smoke by itself, without help from heat, can trigger germination in certain seeds, but just what the vital compound in that smoke might be has kept biologists busy for years.
- Earth
Attack of the Rock-Eating Microbes!
Geologists who examine mineral transformations increasingly see bacteria at work, leading the scientists to conclude that if microbes aren't driving the underlying chemical reactions, at least they're taking advantage of the energy that's released.
- Paleontology
L.A.’s Oldest Tourist Trap
Modern excavations at the La Brea tar pits are revealing a wealth of information about local food chains during recent ice ages, as well as details about what happened to trapped animals in their final hours.
-
Mother and Child Disunion
Data on extensive giveaways of daughters by their mothers in northern Taiwan a century ago may challenge influential theories of innate maternal sentiments.
-
Tailoring Therapies: Cloned human embryo provides stem cells
Scientists have for the first time carried test-tube cloning of a human embryo to the stage at which it can yield stem cells.
- Paleontology
Oh, what a sticky web they wove
A look inside a piece of 130-million-year-old amber has revealed a thin filament of spider silk with sticky droplets that look just like those produced by modern spiders.
-
From the February 3, 1934, issue
alt=”Click to view larger image”> SHORT-WAVE PHONE SYSTEM SERVES BRIDGE BUILDERS Curiously, radio is helping to build a bridge. Special short-wave transmitting and receiving sets make possible communication among groups of contractors scattered on land and water along the eight-and-one-quarter-mile route of work on the San Francisco-Oakland bridge. These men on the job also talk […]
- 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.
- Anthropology
Jaw-dropping find emerges from Stone Age cave
A nearly complete lower jaw discovered in a Romanian cave last year and dating to around 35,000 years ago may represent the oldest known example of anatomically modern Homo sapiens in Europe.
