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How Fast Can A Human Run?

Every four years, the premier event at the summer Olympics is the 100 meter dash, the swift sprint that you can literally miss by sneezing. In the past two Olympics in London and Beijing, the man who won the race was the Jamaican phenom Usain Bolt. Bolt quickly earned the nickname of being the fastest man on earth, which no one has yet been able to take away.

Bolt’s talent is simply that he generates more power than other sprinters. Even more interesting, however, is how much energy he wastes, illuminating how much faster he could actually run.

The Butterfly Effect: How Blue Morpho Wings Could Stop Counterfeiting

For more than a decade, I’ve been fascinated by biomimicry, the way engineers take cues from animals to make airplanes fly faster or submarines glide more efficiently.

In Vancouver, British Columbia, we found one of the most advanced applications yet, with some seriously money-saving ways it can be used.

Fired Up: Building a Better Cook Stove

Cook stoves that run on wood or coal aren’t the most efficient way to cook. But we went to Vashon Island just west of Seattle to understand how cook stoves for developing countries are actually getting better—and with them, a whole host of other environmental issues.

The Bigger Brains of London Taxi Drivers

The memorization required to be a London cab driver requires years of studying. In the process, it also makes drivers’ brains bigger.

In London’s Sewers: Less Pollution and A Smelly Form of Energy

If you don’t mind the smell, there’s lots to learn about the future of water and energy in the sewers under London’s streets.

Photos: London’s Top Sights and Inner Character

As National Geographic’s Change Reaction projects travels through the UK this month, take a look at some of the best candid photos from the road.

Inside ‘The Oscars’ of Gardening

National Geographic goes inside the Chelsea Flower Show, one of the world’s biggest gardening and horticultural shows. Even the Queen comes.

We’re Heading to the UK

National Geographic is headed on the road to find some stories about our planet and it’s future. This time: the UK.

Can a Computer Measure Your Happiness?

A new study tells you how happy your state is. But is it something a computer can really measure?

Coming to a Sky Near You: Drones

Drones have already transformed warfare. Here’s what they’ll tackle next.

The Shadowy World of Food Innovation

Food innovation happens with everything we eat. Why don’t we ever hear about it?

Stanford Innovation: Self-Healing Skin, Easier Drink Pouring, and a New Kind of Jump Rope

Innovation permeates academics at Stanford University. We visit a few labs to see the inventions—big and small—that may change tomorrow.

A Dairy Making Sure Manure Isn’t Waste

Manure is a hefty waste product of dairy and livestock farming. One farmer shows us it can be a valuable tool to produce energy.

Tiny House, Happy Life?

Imagine stepping into a house 25 times smaller than your current abode. We decided to check out just how small a 100-square-foot house actually is.

Can Modern Gold Mining Be Sustainable?

Modern gold mining has tools that California’s gold rushing 49ers could only have dreamed of. Some say the process may even be sustainable.