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The nose's olfactory receptors are stimulated when we smell food and other odors. But could the process of smelling cause weight gain?

Imagine you were asked to invent something new. It could be whatever you want, made from anything you choose, in any shape or size. That kind of creative freedom sounds so liberating, doesn't it? Or ... does it? if you're like most people you'd probably be paralyzed by this task. Why? Brandon Rodriguez explains how creative constraints actually help drive discovery and innovation.

With so many destinations all across the world, it's just natural that most routes require connections. So airlines need to attract connecting passengers in order to stay in business.

The bee population has dropped dramatically and Michael Waite is taking matters into his own hands with a scheme to inseminate Queen bees.

It's mostly about economic development.

There has always been a constant debate as to which is the best form of exercise, so it's time science finds the answer.

South-to-North Water Transfer Project: The huge populations filling China's northern megacities have a shortage of the single most necessary resource for life: water. To solve that problem, the Chinese will soon be moving 44.8 billion cubic meters of fresh water each year from the wetter South to the dryer North.

The 104th Tour de France ended with Chris Froome wearing the yellow jersey and logging fastest overall time. Check out some of the best moments from cycling's greatest race with GoPro who was in the middle of it all.

Special thanks to SCJ for shooting - the ultimate breakfast sandwich for hangovers, one-night-stands, or both. This video was made in response to a Reddit AMA question: What's your favorite breakfast sandwich?

Foodie fans, this one's for you! Whether you lean toward 1915-style roast beef and franconia potatoes, or if 2015's kale craze suits your taste, this look at food over the past century will satiate your palate.

How have music icons changed over the last century? We look at how the styles of male icons have evolved over the years, from Duke Ellington and Bing Crosby to Michael Jackson and Prince.

Jing-Jin-Ji: China is in the midst of a construction spree unparalleled in human history. These are the Megaprojects that will lift China into the future. China wants to make its capital, Beijing, the center of the world's largest supercity, by merging three provinces into one continuous megalopolis of 130 million people.

We tend to imagine that we can only become addicted to a few sorts of things. But real addiction is about using something, anything, to keep our real emotions, fears and hopes at bay. There are many more addicts among us than we think.

Political correctness aims for some very nice results, but its means have a habit of upsetting a lot of people. Might there be an alternative to it? We think there is, and it's called Politeness.

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.

We're used to thinking hugely well of democracy. But interestingly, one of the wisest people who ever lived, Socrates, had deep suspicions of it.

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

Glacier ice is weird. It's solid. Solid things aren't supposed to flow. But glacier ice flows like a liquid, and it does that without melting! How is this possible? I traveled to Mendenhall Glacier in Juneau, Alaska to find out.

Chris Atkeson, the creator of Big Hero 6's Baymax, wants to bring soft robots to the world.

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.

Kaden Casebolt, 5, has Osteogenesis Imperfecta, meaning his bones can break from sneezing. Despite his fragility, the superhero-obsessed boy loves dressing up as his heroes.