The US Has A Secret Model of Iran's Nuclear Facilities 

Back in the days of the Manhattan Project, the government set up a string of National Labs devoted to creating nuclear weapons. Now, those labs are playing a role in the opposite task: stopping them. A secret facility in Tennessee that replicates Iran’s nuclear capabilities was key to the recent negotiations.

Two Malfunctioning Robots Are Now Stuck Inside The Fukushima Reactor 

The dangerous and unenviable task of cleaning up the Fukushima reactor has hit its latest snag: Two snake-like reconnaissance bots had to be abandoned inside the reactor — after one got stuck and another’s camera was damaged by radiation.

So This Is What Space Coffee Brewed With Pee Looks Like

Good to the last drop! NASA Astronaut Scott Kelly has posted this photo of a perfect ball of orbital coffee on Facebook. (And on Twitter. And on Instagram.)

This Is NASA's First 3D-Printed Full-Scale Copper Rocket Engine Part

It may look like some kind of ancient urn, but you’re looking at something rather more advanced. In fact this is the first full-scale copper rocket engine part made by NASA using 3D-printing techniques.

Hubble's Chief Scientist Explains How The Telescope Got Off The Ground

C Robert O’Dell was Chief Scientist on the Hubble Space Telescope project. Twenty five years after its launch, he explains what it took to get the project back in 1972.

This Is What Astronauts Snack On Between Meals

Demanding spacewalks and long hours of research in microgravity make astronauts aboard the International Space Station hungry. In this lovely video, ESA astronaut Samantha Cristoforetti, explains a half dozen snacks she likes to eat during her breaks.

This Clock Only Loses One Second Every 15 Billion Years

If you think your fancy watch is accurate, think again. This atomic clock — the most accurate in the world — is now so finely tuned that it will lose a single second at most over the course of 15 billion years.

The Race To Build A Better Suit For Ebola Aid Workers 

It’s been more than a year since the deadliest ebola outbreak ever hit with full force in West Africa. And while the virus has retreated, the reckoning over the best approach to treat the inevitable next outbreak is only gaining speed.

Tesla's New Battery Could Solve One Of Solar Power's Biggest Problems

So far, specific details are thin on the new battery designed for home use that Tesla’s announcing next week. But just based on what we do know, it’s a pretty big deal. The quest for a good battery that can store home-generated power is kind of like the holy grail for a renewable energy future. This one product might change everything.

Solar Impulse Safely Lands In East China -- But The Hardest Leg Is Still To Come

Yesterday, the solar-powered aeroplane Solar Impulse successfully touched down in Nanjing, China, completing the Asian leg of its global trip. Next, though, comes one of the toughest parts of the journey: crossing the Pacific Ocean.