While clicking around the TED website (TED.com) looking for information on the brain, another presentation I found was by Helen Fisher. Helen is an anthropologist who studies love. She looks at how it evolved, the underlying brain biochemistry and what it means to human society.

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(PS: I’ve written before about TED.)

In this presentation, …

She outlines the three stages of love (lust, infatuation and long-term attachment), shedding light on eternal questions like why we love, and why we cheat. She also discusses the natural talents of women, and their new significance in the modern world. She ends with a warning about the widespread use of antidepressants — and a truly hilarious story of romantic pursuit.