Hospitals have all sorts of amazing tools, and some might even have a particle accelerator hiding somewhere in the basement.

Physics investigates why the universe behaves the way that it does, and today, Hank tells us about the three physics experiments that he thinks were the most awesome at helping us understand how the universe works.

Adam Savage walks through two spectacular examples of profound scientific discoveries that came from simple, creative methods anyone could have followed -- Eratosthenes' calculation of the Earth's circumference around 200 BC and...

Every year, tens of thousands of people have brain surgery without a single incision: there's no scalpel, no operating table, and the patient loses no blood. Instead, this procedure uses a machine that emits invisible beams of light at a...

Originally discovered by accident, X-rays are now used about 100 million times a year in clinics around the world. How do these magic eyes work? Ge Wang details the history and mechanics of the X-ray machine and CT scanners.

Adam Savage walks through two spectacular examples of profound scientific discoveries that came from simple, creative methods anyone could have followed -- Eratosthenes' calculation of the Earth's circumference around 200 BC and...

Have you ever wondered how a tiny little seed grows into a plant? Well, there's a special kind of seed, one you've probably eaten before, that's big enough for you to open up and see how it works: a bean!

Stars represent a celestial battle of two opposing forces, gravity trying to collapse the star, and radiation pressure trying to explode the star. But it comes to an end close to the time that it runs out of fuel. Gravity...

Howcast - The balance beam is a gymnastics standby. It requires skill, control, and focus to master, but most anyone can learn the basics.

Howcast - Learn how to walk on a balance beam in this Howcast video with Dulles Gymnastics Academy.

Howcast - Learn what gymnastic equipment is necessary to practice at home in this Howcast video with Dulles Gymnastics Academy.

Howcast - Check out this inFamous 2 walkthrough and beat "The Dunbar Beam" with this online demo.

Howcast - Learn how to do a balance beam routine in this gymnastics training video from Howcast.

Howcast - Learn how to do back walkover on the balance beam drills in this gymnastics training video from Howcast.

Howcast - Pick up some tips on how to do a back walkover on the balance beam in this gymnastics training video from Howcast.

Howcast - Learn how to do a back walkover on the balance beam in this gymnastics training video from Howcast.

Howcast - Check out part 83 and go back to Earth and try and rescue the galaxy in this walkthrough of Bioware's new release, Mass Effect 3.

Howcast - If you find yourself out in the cold wilderness without matches or a lighter, you can still start a fire. Or you can impress your friends with this little trick.

You have many fond memories of the old tree in your yard, but if you ever have to cut it down, learn how to preserve its legacy by sawing it into boards you can use for a project.

Howcast - Check out part 4 of our walkthrough for Crysis 3, the new first person shooter title by Crytek, and learn how to harness the nanusuit to beat mission 2, Manhattan Jungle.

Step inside a replica of the Stark Trek television series set, which has been painstakingly assembled by a super fan of the series in New York State.

Glorious Use of Arched Bridges Throughout History

Erlang is a functional programming language know for message-based concurrency model. Its BEAM virtual machine is still used by modern languages like Elixir and Gleam. Learn the basics of Erlang in this quick tutorial.

Have you ever wondered what are ct scans used for? And how do they work? In this video, we will be answering all the lingering questions you may have about this popular medical imaging technique.
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