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This video is about why it's harder to successfully land spacecraft and landers and rovers on Mars than on Earth, or Venus, or the Moon, or Titan, or asteroids. It all comes down to atmospheric density! When there's no atmosphere, you can do a powered descent in a flimsy tinfoil spacecraft like the Lunar Module, and when there's plenty of atmosphere you can do an unpowered descent via heat shield and parachutes like the space shuttle, Apollo command module, Soyuz, Huygens, etc. But on Mars with its thin air, you have to do both powered & unpowered descent, getting the worst of both worlds.

Swiss researchers have come a step closer to building a better artificial heart. It's a squishy prototype that's 3D-printed from silicone.

Researchers at Stanford University developed a soft, squishy robot that "grows" like a vine and can squeeze through tight spaces. It can also lift heavy objects, which makes it potentially ideal for search-and-rescue operations.

The Microsoft co-founder imagined much of the tech we use today before it even existed. He shared his thoughts in a 1999 book called "Business @ the Speed of Thought." Here's a quick look at 6 of his predictions that eventually came true, including a device you are probably holding in your hands right now.

They're not just an animal, they're a material. And that's got engineers interested.

If you have played a claw machine you probably haven't won many prizes and maybe even thought they are rigged. Find out what really happened to your allowance.

Researchers have developed a way to make a battery and its casing stretchy, enabling future advancements in wearable electronics.

America is changing how it gets its energy, and coal is losing out.

Tesla is gearing up for the big reveal of the Model 3, its first mass-market car. CEO Elon Musk unveiled the car in March of 2016, but Tesla will show off the production version of the sedan in July. The summer premiere will offer the roughly 400,000 customers who preordered the vehicle a chance to see the final version before deliveries begin at the end of the year.

Apple hasn't officially announced anything yet, but there are lots of rumours out there about what to expect from the next iteration of the company's flagship device. Since it's the 10th anniversary of the original iPhone, we will likely see some big changes. Here's what we think we know so far.

Have you ever wondered what it would be like to take a ride through the human body on the Magic School Bus? Well, a new bit of virtual reality technology is taking that concept and applying it to medical training. Doctors can now teleport inside the human heart and practice surgery over and over again, and this training could revolutionize the future of health care.

More than 18,300 candidates applied to be astronauts in NASA's latest class-smashing the record of 8,000 applicants in 1978-and only 12 got the job. Here's who made the cut.

Amazing images of the far reaches of the universe are everywhere, but are they accurate? What does space really look like?

In 2018, NASA will launch a solar probe that will travel closer to the sun than any spacecraft before. But why? What are they looking for?

A United Arab Emirates company wants to tow an iceberg from Antarctica to the desert for drinking water, but is their plan feasible?

Perpetual motion machines - devices that can do work indefinitely without any external energy source - have captured many inventors' imaginations because they could totally transform our relationship with energy. There's just one problem: they don't work. Why not? Netta Schramm describes the pitfalls of perpetual motion machines.

Tiny lab-grown organs. A spongy cloth that absorbs oil spills. Sure, why not. These are some of the finalists for the European Inventor Award.