Modern turtle shells are almost as diverse as the turtles themselves. Sea turtles have flatter, lighter shells for gliding through the water. Land-dwelling tortoises have domed shells that can slip free of predators' jaws. Leatherback turtles have shells without the ring of bone around the edge. So how did the shell evolve? Judy Cebra-Thomas exp...

Nations can now attack other nations with cyber weapons: silent strikes on another country's computer systems, power grids, dams that leave no trace behind. (Think of the Stuxnet worm.) Guy-Philippe Goldstein shows how cyberattacks can leap between the digital and physical worlds to prompt armed conflict -- and how we might avert this global sec...

From work and happiness, to love and success (and everything else in between), these talks offer insights on some of life's biggest secrets.

Todd Humphreys forecasts the near-future of geolocation when millimeter-accurate GPS "dots" will enable you to find pin-point locations, index-search your physical possessions ... or to track people without their knowledge. And the response to the sinister side of this technology may have unintended consequences of its own.

Embrace our wide-open shareable future -- where everything's hackable and the power of the crowd propels innovation.

Crop physiologist Guntur V. Subbarao and his team have developed an antibiotic-infused strain of wheat that naturally combats harmful, fertilizer-eating bacteria -- a "monster" contributor to climate change. Learn more about how this breakthrough could once again revolutionize agriculture, increasing crop yields and protecting our planet at the ...

Mikko Hypponen lays it out: "The talks I chose for my playlist are about technology, security or privacy. Because geeks. Then I added the talk from Dan Barber. Because fish."

After watching the collection of talks on Cyber-Influence and Power, read a thoughtful recap of the major points in this TED Study, and learn where experts believe things are headed. Where next? Trends and questions in politics, cyber-influence and power As the year 2012 drew to a close, the Syrian government shut down the Internet in order to c...

Deepen your understanding of Cyber-Influence and Power with these carefully crafted educational exercises that let you get the most out of this TED Studies subject. Activity 1 In his TEDTalk, Shashi Tharoor shares some surprising statistics about the Indian cell phone market, supporting his claim that India has become "an astonishingly connected...

Dive into the digital world with these talks on coding and the importance of teaching code to future generations.

You use paper towels to dry your hands every day, but chances are, you're doing it wrong. In this enlightening and funny short talk, Joe Smith reveals the trick to perfect paper towel technique.

Laura Galante profiles advanced cyber threats and network breaches and investigates the political, military and financial implications of cyber operations.