Features1827 articles archived since 1845

Safeguarding GPS

Attempts to jam U.S. GPS-based weapons and navigation systems in Iraq were a reminder of just how vulnerable the technology is

Strung Out on the Universe: Interview with Raphael Bousso

Headed South?

Earth's fading field could mean a magnetic flip soon

Making Computers Talk

Say good-bye to stilted electronic chatter: new synthetic-speech systems sound authentically human, and they can respond in real time

The Economics of Science: Interview with Terence Kealey

The Beetle Battle

How early, aggressive action against the citrus longhorned beetle, cousin of the destructive Asian longhorned beetle, may have thwarted an ecological disaster

Extinguishing the Threat

U.S. special weapons may target Iraqi chemical and biological threats

Editor¿s Commentary:
The Cold Odds against Columbia

The cost of exploring new frontiers is measured in human lives, but it would be wrong not to question whether that cost must be so high

Greenhouse Suits

Litigation becomes a tool against global warming

Future Combat, Part 2

As the Army's ground forces evolve for future battles, so must its air-transportation systems

Future Combat, Part 1

The Army of the future will be lighter, fleeter and better connected

Fixing Food

Allergen-free comestibles might be on the way

Born to the Purple: the Story of Porphyria

Porphyrins are light-activated chemicals that can be used to combat ills including tumors and diseases of the eye. But they have a dark side: when the wrong forms of them build up in the body, they cause a disease called porphyria...

Calling ET

We're still waiting for a real signal from an extraterrestrial intelligence

Making Do

Third world naturalists cope with scarce resources