The Discovery of Brown Dwarfs
Less massive than stars but more massive than planets, brown dwarfs were long assumed to be rare. New sky surveys, however, show that the objects may be as common as stars.
Features
Building a Brainier Mouse
By genetically engineering a smarter than average mouse, scientists have assembled some of the central molecular components of learning and memory
The 1999 National Medal of Technology
The latest winners of the nation's highest honors for innovation are celebrated for outstanding contributions to the growth and commercialization of the Internet, biotechnology, pattern recognition and more
Quantum Teleportation
The science-fiction dream of "beaming" objects from place to place is now a reality—at least for particles of light
Understanding Clinical Trials
The journey from initial medical research to the bottle in your family's medicine cabinet is complex, time consuming and expensive. Can the clinical trial process be refined?
The Aleutian Kayak
The Aleuts built the baidarka to suit their life as hunters on the open ocean. The sophisticated design of this kayak is still not entirely understood
Monitoring Earth's Vital Signs
A new NASA satellite—one of a fleet called the Earth Observing System—is using five state-of-the-art sensors to diagnose the planet's health like never before
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Fireballs of Free Quarks
50, 100 & 150 Years Ago: Einstein, the H-Bomb and Whale Harpoons
Mind Reading This?
- From the Editor
Quantum Bits and Boats
- Letters
The Mail
- Advances
Whirl-a-Gig
Insides Out
- Recommended
A Three-Billion-Year Memoir
- Wonders
The Lion Emperors
- In Brief
So you want to start a family...
- Profile
A Greene Universe
- Mathematical Recreation
Counting the Cattle of the Sun
- Amateur Scientist
A Furnace in a Thermos
- Science and the Citizen
Car Parts from Chickens
Throwing in the Tower
Outbreak Not Contained
Power to the PC
A Taste for Science
Two Places at Once
Morticians Beware
Budget Boost
The Fifth Taste
- By the Numbers
Women and the Professions
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Cleaning Agents
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Water Music
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Who Were the Neandertals?
- Cyber View
Who Wants Privacy?
- Technology and Business
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