TED Talks


How You Can Help Save the Monarch Butterfly—and the Planet

F, Sep 24|10am| No Cost

Monarch butterflies are dying at an alarming rate around the world -- a looming extinction that could also put human life at risk. But we have just the thing to help save these insects, says author Mary Ellen Hannibal: citizen scientists. Learn how these grassroots volunteers are playing a crucial role in measuring and rescuing the monarch's dwindling population -- and how you could join their ranks to help protect nature. (You'll be in good company: Charles Darwin was a citizen scientist!)

Close-up Card Magic with a Twist

F, Oct 15|10am|No Cost

Like your uncle at a family party, the rumpled Swedish Doctor Lennart Green says, “Pick a card, any card.” But what he does with those cards is pure magic—flabbergasting, lightning fast, how-does-he-do-it? Magic.