The dawn of de-extinction. Are you ready?

3191b98d-1929-497e-b22f-09215c66327cThroughout humankind’s history, we’ve driven species after species extinct: the passenger pigeon, the Eastern cougar, the dodo …

But now, says Stewart Brand, we have the technology (and the biology) to bring back species that humanity wiped out. So — should we? Which ones? He asks a big question whose answer is closer than you may think.