6,867 results
6,867 results for: Bears
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Tiny Bubbles
Microscopic vesicles shed by cells may help the AIDS virus, benefit cancer cells, and drive the immune response.
- Anthropology
Out on a Limb
The science of body development may make kindling out of evolutionary trees.
- Anthropology
Hand and Brain
Get a handle on primate handedness research and its bearing on brain function at a Web site run by anthropologist M.K. Holder. Participate in ongoing research and listen to various primates sound off, from a screaming chimpanzee to a belching mountain gorilla. Go to: http://www.indiana.edu/~primate/index.html
- Health & Medicine
Cancer vaccine gets first test in patients
The first clinical test of a cancer vaccine that targets a protein called carcinoembryonic antigen shows promise.
- Astronomy
Dark Doings
A slew of new and proposed experiments, ranging from the cosmic to the subatomic scale, may shed light on why the expansion of the universe is speeding up.
- Chemistry
Space Invaders
Recent astronomical observations and sophisticated lab experiments portray space as a breeding ground for complex organic molecules, the likes of which may have jump-started life on Earth.
- Astronomy
Shades of Venus
On June 8, for the first time in 122 years, the silhouette of Venus will move across the face of the sun.
- Humans
From the September 23, 1933, issue
LEAFY SUCCULENTS SOLVE PROBLEM SET BY DESERT Desert plants have a particularly hard problem to solve, set by that old Sphinx, the desert itself, and if they fail to solve it, the penalty is the same as that exacted in the old Greek myth–they must die. They must spread a sufficient chlorophyll surface to the […]
- Tech
Dream Machines from Beans: Legume proteins provide motion
Plant proteins swell and shrink in response to calcium, sparking new ideas for micromachines.
- Earth
Nonstick but not nontoxic
A proliferating pollutant shed by nonstick products and surfactants caused neonatal deaths and developmental impairments in tests with rodents.
- Materials Science
A new carbon nanotool springs to life
Physicists have pulled out the inside cylinders of multiwall carbon nanotubes, as if expanding a telescope, indicating how the devices may serve as tiny bearings and springs in future nanomachines.
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19304
I was dismayed to see you publish an unsubstantiated and highly misleading claim that welfare “reform” is not harming children. The study dealt with the atypical welfare mothers able to find sustainable employment. For them, I don’t doubt that having enough money rather than too little would be an improvement. Unmentioned are the many unskilled […]
