Features1827 articles archived since 1845

The Chronology Protection Conjecture

The mind is still the safest way to time travel

New Light on Breast Cancer

Laser light and thermal heat could help improve the accuracy of mammograms

A Model Program

Scientists often experiment virtually with computer models, but developing such software is time-consuming and difficult. A new DOE program called SciDAC aims to jump-start the process

The Little Spacecraft that Could ¿ and Did

Decades after their original objectives were completed, Pioneer, Voyager and IMP-8 keep on trucking

Multilingual Machines

"Gist" translations by commercially available software translate with only 70 to 80 percent accuracy. Will statistical-analysis techniques improve that performance?

Avoiding the Impact

After last month's near miss with an asteroid 100 meters in diameter, a former astronaut discusses what to do about the danger to Earth from huge space rocks

The Language of Song: An Interview with Donald Kroodsma

Peering Over Einstein's Shoulders

Seeking still more complete descriptions of the workings of spacetime, scientists are testing the boundaries of the special theory of relativity

Fine-Tuning Astronomy

The advent of precise spectroscopy--allowing a much sharper view of the composition of celestial objects--is revolutionizing modern astronomy

Secrets of the Stradivarius: An Interview with Joseph Nagyvary

Sci/Tech Web Awards 2002

Lost in Space

Problems with the space shuttle and the International Space Station have knocked NASA off its moorings

Special Delivery

The bioterror weapon of choice has supplied new treatment strategies for HIV and cancer

The Truth about Human Aging

Antiaging products are big business, but the marketing of these products often misrepresents the science. Rather than let their silence imply their support, 51 leading scientists in the field of aging research collaborated on a position paper that sets out the current state of the science and separates fact from fiction...

Autonomic Computing

Programs crash, people make mistakes, networks grow and change. That¿s life, and computer scientists are finally building systems that can deal with it