Uncategorized
- Physics
Stretching and twisting a bright idea
A new, stretchy type of liquid-crystal component makes it possible to change a laser's color by simply pulling on the membrane—a much easier, cheaper means of adjustment than that used for today's complex and expensive tunable lasers.
- Physics
In a squeeze, nitrogen gets chunky
Remarkable already for being a semiconductor and, perhaps, an explosive, a new, solid form of nitrogen made by crushing the ordinary gas to the highest pressures ever also stands out because it continues to survive when the pressure is released.
-
From the May 30, 1931, issue
LIFE IS RARE IN UNIVERSE, ASTRONOMER BELIEVES Life is a rare phenomenon in the universe, Sir James Jeans, British astronomer, assured the Franklin Institute meeting at which he was presented the Franklin Medal, one of Sciences highest awards. I leave it to you to be pleased or not, Sir James said, at a large fraction […]
- Earth
Daily Planet Earth
The Earth Science Picture of the Day Web site features photos, satellite images, and illustrations that highlight the diverse processes and phenomena shaping our planet and influencing our lives. A short explanatory caption and links to sources for more detailed information accompany each illustration. Go to: http://epod.usra.edu/
-
- Anthropology
Evolution’s Youth Movement
The fossils of ancient children may provide insights into the evolution of modern Homo sapiens.
-
18942
As an insect taxonomist, I was amused by your article about whimsical scientific names but disappointed that one of my favorites was not mentioned: the wasp Iaha ha. Sandra Shanks San Francisco, Calif. Three observations on your article: 1) Linnaean names, at their best, tell you something about the creature that is named. Thus while […]
-
A Fly Called Iyaiyai
All that Latin has its light side.
- Physics
Electrons trip on tiny semiconductor steps
A first glimpse of how a semiconductor's surface alters electrons' magnetic fields, or spins, suggests that tiny steps in the surfaces are tripping up efforts to create so-called spintronics circuits from semiconductors.
- Health & Medicine
Genetic flaw found in painful gut disease
Scientists have discovered a genetic mutation that occurs in people with Crohn's disease, a digestive disorder that attacks the intestines.
-
Slave-making ants get rough in New York
The whole ant slave-making business turns more violent in New York than in West Virginia, even though it features the same species.
- Health & Medicine
Poliovirus slaughters brain tumors in mice
Scientists have altered a live polio virus, inducing it to target and kill brain tumor cells without causing polio.
