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In Tucson, we learned it's important to keep the box...and your receipt! Peter Planes appraises a rare GMT Master Model Rolex from 1960, one of the highlights from Tucson Hr 2.

"I'm now swimming in a sea of color": This colorblind designer is seeing a whole new world around him thanks to these innovative glasses.

It's a special-occasion-dinner in the Ramsay household, and even the kids get involved in helping Gordon to prepare the Rolls Royce of beef cuts: the fillet. The salsa verde adds punch, and the truffle adds indulgence. A truly special dinner.

From sushi to samurai, misty mountains to modern metropolises, and prayer ceremonies to pop concerts, explore the compelling contrasts of Japan in 360-degree video on Discovery VR.

Dude Perfect teams up w/ Pool Trick Shot legend Florian 'Venom' Kohler

Trace and Amy get their DNA test results, and we talk to an expert about how scientists actually get genetic information out of DNA.

Stanford University researchers have found a new way to extract particles of Uranium from seawater. Could this bring us closer to sustainable nuclear power?

The meter is the world's ultimate measure, but how did it become "the" meter? What is this measurement based on? The story of this revolution in measurement traces its roots to the French Revolution. Scientists decided that an equal and united people should have equal and united measures. So they sent a pair of young astronomers out to measure the world, and invent the meter. Little did they know they'd find nothing but war, deception, and strife along the way. As a result of this ill-fated mission, the meter carries an error that still persists today. Still think the metric system is so perfect?

Chimpanzees are very smart animals, so why can't they speak? Tara is here to explain how a gene mutation allows humans to speak, but not chimps.

Watch the world's largest cloud harvester in action.

Scientists have found trash in the deepest parts of the ocean, the Mariana Trench. What does this mean for us and the organisms living there?

The technology behind the cinematic style of the BBC's Planet Earth II.

A new study has found cockroaches can sense the Earth's magnetic field, an ability called magnetoreception. Could humans have this sense, too?

*BREAKING NEWS* NASA has just discovered 7 Earth-like planets!

Tyler Armstrong's dream is to climb the Seven Summits, the highest mountain on each continent, and at only 12 he has already summited Aconcagua, Mount Elbrus and Kilimanjaro. After being denied a permit to climb Mount Everest because of his age, he started preparing to climb Mount Denali to prove that he is able to conquer the world's most extreme terrain.

It's one of the most important technologies of our time.

One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

As the mean global temperature continues to rise, the arctic ice caps continue to melt. What are scientist planning to do about it? Here's a hint: it involves 10 million sea water pumps.

You have your mom's smile, your dad's eyes, and the ear muscles of a Triassic mammal.

Dragonfly wings are covered in bacteria-killing nanopillars, and scientists are taking inspiration from them to make smarter anti-bacterial surfaces!

Moleskine has developed a Smart Writing Set that transmits notes to your phone. The Pen+ has a thin aluminum body with a hidden camera embedded inside it.