The sky will soon fill with low-orbiting satellites providing communications links to every point on earth. We should press these fleets into double duty as solar energy collectors that relay uninterrupted beams of nonpolluting electrical power to earth.
Detractors trash recycling as unnecessary and too much bother. But these conclusions are garbage, say two leading advocates, because they are based on tainted assumptions.
Can free access to the Internet enhance the lives of people in poor communities? An experimental system in East Austin, Texas, is showing the way.
It's been a losing battle for half a century. We have many of the weapons we need to save the lives of millions of children, but to turn the tide we will have to marshal all of them.
Invention By Design: How Engineers Get from Thought to Thing
Aramis, or the Love of Technology
The principle designer of the IBM program that beat Gary Kasparov asserts that the win was a plus for humanity and comments on how such software can help do other jobs.
Federal research support during the Depression produced key findings and famous scientists. The experience sheds light on the pursuit of R&D during lean times.
Many people who are vulnerable to heart attack don't know it. Researchers are now pinning down new risk factors--and some suggest preventive measures.
In an effort to lure Web-savy customers, more and more companies are setting up shop online. Profits are elusive, though, as pioneers attempt to discover how best to tap the medium's potential.