Aliens, man. If we would only listen to them, the world would be a better place.
Last week's meteorite impact: cosmic coincidence, or a sign of the Mayan apocalypse? Brush up on the nuttiest theories floating around the Web.
Sixty years ago today, the U.S. detonated the first hydrogen bomb. Here's how we got there. Plus, the atomic spaceship we're still waiting for.
Russia tests the "father of all bombs" but technical hurdles could defuse its lethal power
A former spy's excruciating death by radiation poisoning marks the beginning of an era of high-tech hit men who can kill from anywhere
Joseph Longo's Plasma Converter turns our most vile and toxic trash into clean energyâ€”and promises to make a relic of the landfill
It's the ultimate nightmare: a nuclear attack in the U.S. masterminded by terrorists. Here's how that could happen-- and how we can prevent it
Space-launched darts that strike like meteors
It's all about enrichment
A laser cannon that blasts from the air
A new rapid-fire gun could save lives rather than take them.
Can science make us more secure? We put this query to a few thoughtful people.
To maintain accuracy and realism, producers of the film sought out military and government officials to advise them.
100 years from now, what jobs will people be hating?
A gun that fires a million rounds a minute
A meteorite streaked through the sky Friday morning, exploding over central Russia. Plant your eyeballs here for the latest updates. 3:15 p.m. EST: Russia Today writes that the estimated cost of damage has been revised down from 1 billion rubles to 400 million rubles, or about $13 million.
A peek at our nonlethal arsenal
As the U.S. campaigns against terrorism, new technologies will move to the front lines.
Taylor Wilson always dreamed of creating a star. Now he's become one
Biological threats provide fertile plot material for books, movies and videogames
Not just for fictional villains anymore
A new response posture also dictates nukes will not be used against other non-nuclear states in the event of a biological or chemical attack