Telomeres, Telomerase and Cancer
An unusual enzyme called telomerase acts on parts of chromosomes known as telomeres. The enzyme has recently been found in many human tumors and is being eyed as a new target for cancer therapy...
Features
Malnutrition, Poverty and Intellectual Development
Research into childhood nutrition reveals that a poor diet influences mental development in more ways than expected. Other aspects of poverty exacerbate the effects
The Global Positioning System
Two dozen satellites hovering thousands of miles out in space are allowing people to locate themselves on the earth's surface with remarkable precision
Seeing Underwater with Background Noise
With a technique called acoustic-daylight imaging, sounds in the sea can "illuminate" submerged objects, thereby creating moving color pictures without sonar
Colossal Galactic Explosions
Enormous outpourings of gas from the centers of nearby galaxies may ultimately help explain both star formation and the intergalactic medium
The Bacteria Behind Ulcers
One half to one third of the world's population harbors Helicobacter pylori, "slow" bacteria that infect the stomach and can cause ulcers and cancer there
The Loves of the Plants
Carl Linnaeus classified plants according to their reproductive parts, endowing them as well with sex lives reflecting 18th-century values and controversies
Quarks by Computer
Yearlong computations have helped to confirm the fundamental theory behind quarks -- and, using its principles, even to identify a new particle
Departments
- From the Editor
Letter from the Editors, February 1996
- Letters
Erratum
Letters to the Editors
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Reviews and Commentaries--Hands-on Astronomy
- Anti Gravity
Sinister Movements
- 50, 100 & 150 Years Ago
50, 100 and 150 Years Ago: Uranium Concerns, Meteorite Explosion and Fire Extinguishers
- Wonders
The Physics of Binary Numbers
- Profile
Dennett's Dangerous Idea
- Mathematical Recreation
Proof of Purchase on the Internet
- Amateur Scientist
Growing Seedlings at Less than 1 G
- Science and the Citizen
Keeping Vaccines Cold
Frozen Assets
Radar Range
The Doctor Glut
Schizophrenia Revisited
The Rainbow Majority
Going Out with a Bang
A Harebrained Scheme
- By the Numbers
Fluoridation
- Connections
Show Time!
- Departments
Reaching an Economic Event Horizon
Investigating Miracles, Italian-Style
- Field Notes
Bose Knows P.R.
- Technology and Business
Bill Gates's Apocryphal History
Green Policies
A New Way to Spell Relief: V-e-n-o-m
More Rules of the Road
