What I learned from spending 31 days underwater | Fabien Cousteau
In 1963, Jacques Cousteau lived for 30 days in an underwater laboratory positioned on the floor of the Red Sea, and set a world record in the process....
The magic of the Amazon: A river that flows invisibly all around us | Antonio Donato Nobre
The Amazon River is like a heart, pumping water from the seas through it, and up into the atmosphere through 600 billion trees, which act like lungs. ...
How not to be ignorant about the world | Hans and Ola Rosling
How much do you know about the world? Hans Rosling, with his famous charts of global population, health and income data (and an extra-extra-long point...
Why does the universe exist? | Jim Holt
Why is there something instead of nothing? In other words: Why does the universe exist (and why are we in it)? Philosopher and writer Jim Holt follows...
Please, please, people. Let's put the 'awe' back in 'awesome' | Jill Shargaa
Which of the following is awesome: your lunch or the Great Pyramid of Giza? Comedian Jill Shargaa sounds a hilarious call for us to save the word "awe...
The danger of silence | Clint Smith
"We spend so much time listening to the things people are saying that we rarely pay attention to the things they don't," says poet and teacher Clint S...
Why I live in mortal dread of public speaking | Megan Washington
Megan Washington is one of Australia's premier singer/songwriters. And, since childhood, she has had a stutter. In this bold and personal talk, she re...
An ultra-low-cost college degree | Shai Reshef
At the online University of the People, anyone with a high school diploma can take classes toward a degree in business administration or computer scie...
What makes a word "real"? | Anne Curzan
One could argue that slang words like ‘hangry,’ ‘defriend’ and ‘adorkable’ fill crucial meaning gaps in the English language, even if they don't appea...
What ants teach us about the brain, cancer and the Internet | Deborah Gordon
Ecologist Deborah Gordon studies ants wherever she can find them -- in the desert, in the tropics, in her kitchen ... In this fascinating talk, she ex...