Themes Might You Live a Great Deal Longer?

If this collection of provocative speakers proves even partially right, we may all live to a (very) ripe old age.

Futurist Ray Kurzweil foresees body and brain enhancements leading to an extended human tenure on Earth -- and beyond. Surgeon and chemical engineer Alan Russell, meanwhile, asks: "If newts can regenerate a lost limb, why can't we?" And Aubrey de Grey, icon of the life extension movement, gives a challenging talk that may convince you that aging will soon become optional.

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