
A Great Leap in Graphics
The quality of 3-D computer graphics is poised for a quantum jump forward, thanks to speedier ways to simulate the flight of light
W. Wayt Gibbs is a contributing editor for Scientific American based in Seattle. He also works as a scientific editor at Intellectual Ventures.

A Great Leap in Graphics
The quality of 3-D computer graphics is poised for a quantum jump forward, thanks to speedier ways to simulate the flight of light

A New Robot Rolls, and a New Prize Is Set
The quest to build autonomous vehicles for the battlefield continues

Ultimate Clocks
Atomic clocks are shrinking to microchip size, heading for space--and approaching the limits of useful precision

Innovations from a Robot Rally
This year's Grand Challenge competition spurred advances in laser sensing, computer vision and autonomous navigation-not to mention a thrilling race for the $2-million prize

Creative Paths to Open Access
Technology supplies new protections against threats of a fortress society

Breaking the Mold
As the glass cools on his latest giant mirror, Roger Angel keeps pushing telescope design. His next one might even find Earth-like planets around other stars

How Should We Set Priorities?
The world faces no shortage of problems--or of good ideas to solve them. Which should we tackle next? Even as leaders converge on some answers, new markets are being set up to preempt politics

Cosmic CAT Scan
Observing the early universe--with 10,000 TV antennas

Nanobodies
Antibodies, often described as magic bullets, are actually more like tanks: big, complicated and expensive. Tinier "nanobodies," derived from camels and llamas, may be able to infiltrate a wider range of diseases at lower cost. That is the hope, at least, of one small start-up in Belgium

The California Gambit
Biologists applauded the Golden State's $3bn wager on stem cell science. But as W. Wayt Gibbs reports, the stakes may be higher than they realise

Obesity: An Overblown Epidemic?
A growing number of dissenting researchers accuse government and medical authorities—as well as the media—of misleading the public about the health consequences of rising body weights

Obesity: An Overblown Epidemic? Overview / A Crisis in Question

Hans Albrecht Bethe, 1906-2005

Considerate Computing
Digital gadgets demand ever more of our attention with their rude and thoughtless interruptions. Engineers are now testing computers, phones and cars that sense when you're busy and spare you from distraction

Computing at the Speed of Light
Emerging ways to make photonic connections to electronic microchips may dramatically change the shape of computers in the decade ahead

A Split at the Core
Physics is forcing the microchip industry to redesign its most lucrative products. That is bad news for software companies

An Uncertain Defense
How do you test that a human Ebola vaccine works? You don't

Atomic Spin-offs for the 21st Century
A new generation of technologies aims to put Einstein's theories to work in computers, hospitals--even submarines

From Finish to Start
Was the Grand Challenge robot race in March the fiasco it appeared to be? Hardly, argues William "Red" Whittaker. The annual event is pushing mobile robotics to get real

Untangling the Roots of Cancer
Recent evidence challenges long-held theories of how cells turn malignant--and suggests new ways to stop tumors before they spread

Synthetic Life: Overview/Synthetic Biology

In the Land of the Dreamtime
Visiting petroglyphs, pristine marshes and the deep past in the vast wild of Australia's Kakadu National Park

Plug-and-Play Robots
Personal robots may soon be as cheap and customizable as personal computers

Robots Come Up Short in the Grand Challenge