What is your dangerous idea?

That's the world question of 2006. "Huh?," you ask. Well, apparently John Brockman at Edge.org asks some of the world's biggest smartypants to answer just one very thought-provoking question each year. For 2006: What is your dangerous idea?

"The history of science is replete with discoveries that were considered socially, morally, or emotionally dangerous in their time; the Copernican and Darwinian revolutions are the most obvious. What is your dangerous idea? An idea you think about (not necessarily one you originated) that is dangerous not because it is assumed to be false, but because it might be true?"

Contributor's include Kevin Kelly from Wired and J. Craig Venter, the genomics pioneer who mapped the human genome (as an aside - I met his wife who's also a genome researcher a few years back - nice lady).

Past questions have included questions such as "What do you believe is true even though you cannot prove it?" and "What questions have disappeared?"

Check out the answers to this year's question at The World Question Center 2006.