Researchers are using computers to generate ``digital organisms\'` that
undergo evolutionary processes such as mutation and reproduction. As a
result, they have overturned a long-standing assumption of evolutionary
theory.

After initially playing down the chance that a falling jetliner could disable or destroy a nuclear power plant, the Nuclear Regulatory Commission is now planning to study whether a plant could survive such a disaster.

Small robotic aircraft may help the U.S. military to identify targets and
assess damage in the Afghan war. Ten years after they were extensively deployed in the Gulf War, robotic aircraft with video camera "eyes" have found a secure niche in U.S. military engagements.

Like the flying killer robots of the "Terminator" movies, the unmanned Predator aircraft is a step closer to the automated battlefields long envisioned by science-fiction writers.

Martin Rees argues in a new book that coming technological catastrophes could doom billions and to prevent them, society may need to consider restricting specific types of scientific research. He specifically cites dangers from nanotechnology and supercolliders.

Anti-nuclear activists and pro-space advocates square off on whether nuclear powered spacecraft are safe.

Real-life professors and scientists are grappling with real antimatter -- the particle physicists' "mirror image" of ordinary matter -- in today's laboratories to create the weapons and space cruisers of tommorrow.

The U.S. Air Force is quietly spending millions of dollars investigating ways to use a radical power source -- antimatter, the eerie "mirror" of ordinary matter -- in future weapons.

The U.S. Air Force has funded a study to examine possible ways to teleport humans and objects through space. Critics argue that funding studies into teleportation are a waste of money for now because of the tremendous energy and computation requirements.

India, China, Japan and Europe are busy launching, or planning to launch, robotic spaceships to the moon and points beyond. Their goals will include tasks ranging from mapping minerals to seeking ice from which future astronauts might extract drinking water. More distant goals include looking for a mineral called ilmenite that some experts think is rich in an isotope called helium-3.