A physicist explains why and how we redefined a basic unit of measure.
Head in the clouds? Then it's time to make yourself a useful citizen scientist.
Scientists think optical clocks are ready to replace the atomic clock as the standard
Understanding its mechanism will help researchers create better space suits and even concussion preventing helmets
Quantum teleportation, more reliable than ever before, at greater distances than ever before.
An ambitious experiment is underway to harness the heat of a volcano in central Oregon. The process is green, efficient... and causes earthquakes.
Measuring the distance to cosmic neighbors helps calculate the expansion of the universe as a whole.
Serge Haroche and David Wineland have figured out how to measure quantum systems without disturbing them, enabling the first steps toward quantum computers.
Tomorrow's historical astronomical event is not just a beautiful novelty
One man's noise is another man's long-sought signal
The limits of travel are defined not by what vehicles can do, but by what vehicles can do to us. So how much can we take?
Nearly a decade ago, NASA built an Earth-monitoring satellite that could have observed global warming in action. Then the agency stashed it in a warehouse in Maryland, where it remains to this day.
All this week, the origin and continued preservation of five of our favorite standard units of measure
By measuring changes in rocks, seismologists may have found a way of predicting quakes hours in advance
A notoriously imperfect standard of measurement gets a modern makeover
Sewage is more than just filth. It's evidence of our worst habits, everything from caffeine to cocaine, all ingested and flushed down the toilet. Now scientists are using wastewater to drug-test entire cities, and the results are sobering
The nation's satellites document environmental threats around the globe. So why is the future of earth observation in peril?
This mechanized pack animal will follow soldiers wherever duty calls them. Click here to download an incredible video (WMV format) of the BigDog in action.
The banana as we know it is on a crash course toward extinction. For scientists, the battle to resuscitate the world's favorite fruit has begun--a race against time that just may be too late to win
Last July, 9-year-old Alex Everett received his first shot of synthetic human growth hormone--an injection he will get every night for eight years. Alex is not sick--he is short. Should we be treating stature as a medical condition?
Behind the scenes in the race to develop a military vehicle that can drive itself.
New designs and materials will make future skyscrapers sturdier, safer, and smarter.