Stories by Tim Beardsley

International talks address human effects on climate

Predictive medical tests raise legal and ethical questions

Stealth Bomber is the target in a debate on nuclear strategy

Satellite positioning and data relay enter the marketplace

Science is improving California's premium wines

This has (so far) been the warmest decade in 127 years

Hypersonic flight is on the way, but don't make reservations yet

Can computer simulations test the untestable?

The president requests a $1.2-billion boost for civilian R&D

Impacts' role in the history of life remains contentious

The gene determining maleness in human embryos is found.

An informal U.S.-Soviet college has a role in arms control

A philosophical dispute raises hackles among biologists

Government is moving to exploit massively parallel machines

Additional data blame the hole on industrial chemicals

A study of laboratory-animal use founders in acrimony

Many sdentists perceive a lack of direction in the space program

Microelectronic devices give astronomers new powers of seeing