A few things you've always wanted to know about sex: why we enjoy it, how to explain it, and, importantly, how flowers do it.
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| 1 |
10 things you didn't know about orgasm
17:11
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"Bonk" author Mary Roach delves into obscure scientific research, some of it centuries old, to make 10 surprising claims about sexual climax, ranging from the bizarre to the hilarious. (This talk is aimed at adults. Viewer discretion advised.)
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| 2 |
Religions and babies
13:21
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Hans Rosling had a question: Do some religions have a higher birth rate than others -- and how does this affect global population growth? Speaking at the TEDxSummit in Doha, Qatar, he graphs data over time and across religions. With his trademark humor and sharp insight, Hans reaches a surprising conclusion on world fertility rates.
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| 3 |
Selling condoms in the Congo
04:16
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HIV is a serious problem in the DR Congo, and aid agencies have flooded the country with free and cheap condoms. But few people are using them. Why? "Reformed marketer" Amy Lockwood offers a surprising answer that upends a traditional model of philanthropy. (Some NSFW images.)
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| 4 |
Sex, drugs and HIV -- let's get rational
21:46
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Armed with bracing logic, wit and her "public-health nerd" glasses, Elizabeth Pisani reveals the myriad of inconsistencies in today's political systems that prevent our dollars from effectively fighting the spread of HIV. Her research with at-risk populations -- from junkies in prison to sex workers on the street in Cambodia -- demonstrates the sometimes counter-
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| 5 |
The beautiful tricks of flowers
13:48
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In this visually dazzling talk, Jonathan Drori shows the extraordinary ways flowering plants -- over a quarter million species -- have evolved to attract insects to spread their pollen: growing 'landing-strips' to guide the insects in, shining in ultraviolet, building elaborate traps, and even mimicking other insects in heat.
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| 6 |
The secret to desire in a long-term relationship
19:10
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In long-term relationships, we often expect our beloved to be both best friend and erotic partner. But as Esther Perel argues, good and committed sex draws on two conflicting needs: our need for security and our need for surprise. So how do you sustain desire? With wit and eloquence, Perel lets us in on the mystery of erotic intelligence.
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| 7 |
Why we love, why we cheat
23:31
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Anthropologist Helen Fisher takes on a tricky topic – love – and explains its evolution, its biochemical foundations and its social importance. She closes with a warning about the potential disaster inherent in antidepressant abuse.
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