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
How much destruction would a nuclear bomb cause if dropped on or near your hometown? Two online calculators do the math
Scientists cast doubt over the Pentagon's plan to build a new nuclear bunker buster
A new ice age, exploding stars, the hypothetical Doomsday Machine, and more scenarios that are almost certain to eradicate life on Earth
Taylor Wilson always dreamed of creating a star. Now he's become one
Massive space rocks hurtle past Earth with frightening regularity. Some scientists want to deflect them. Others want to drag one closer.
How safe can a citizen expect to be in a post 9/11 city? What technology can a city use to make its citizens safe?
An uncovered file documents Cold War-era investigations into an important question: is it safe to drink beer that was exposed to an atomic bomb detonation? And does it taste OK?
Steuart Pittman, head of the U.S. fallout shelter program, died earlier this month at age 93. As a reminder of just how frightening the Cold War was, check out these old family-style bunkers from the pages of Popular Science.
Toxin sniffers, missile jammers, dirty-bomb detectors: Will a new security arsenal make us safer?
High-speed movie cameras can shoot up to 20 million frames in the blink of an eye. The world is a mighty interesting place in ultimate slo-mo.
Space-launched darts that strike like meteors
Some methods that people have suggested for preventing, or stopping, a hurricane--and why they might not work
Take a look at a few of cinema's most mind-boggling moments of scientific inaccuracy-plus a few rare films that manage to get things (mostly) right
Excerpt: The Great Halifax Explosion
Are you ready for the end of the world? View this survival checklist from 1951 Popular Science.
Sci-fi movies should bend the rules to impress audiences, but they can't play people for complete fools. Review the most science-distorting movies of 2012 in this gallery.
Forget algebra homework: try building spaceships, operating a nuclear reactor or listening in to distant galaxies
Our reporters deliver the latest on autonomous vehicles.
More than 50 of the most dangerous, disgusting, humiliating and just plain bad professions
Herpes, having a blast.
Russia tests the "father of all bombs" but technical hurdles could defuse its lethal power
Watch out where the huskies go, and don't you eat that Calcium-45