The Race to Replace the Kilogram
The long-running effort to ditch the decaying, 19th-century artifact that defines the kilogram nears its conclusion
Stories by Tim Folger
The Race to Build the Unhackable Network
Quantum computers will render today's cryptographic methods obsolete. What happens then?
Can Time Travelers Reach the Past via Wormholes?
Astronauts already skip ahead in time, but the laws of physics seem to forbid going backward—or do they?
Can We Keep Getting Smarter?
Ever rising IQ scores suggest that future generations will make us seem like dimwits in comparison
Will We Continue to Get Smarter? The Flynn Effect Says Yes
Ever-rising IQ scores suggest that future generations will make us seem like dimwits in comparison
Waiting for the Higgs
Even as the last protons spin through the most successful particle accelerator in history, physicists hope to conjure one final triumph
Contact: The Day After
If we are ever going to pick up a signal from E.T., it is going to happen soon, astronomers say. And we already have a good idea how events will play out
