内容简介
RosemaryandPeterGrantandthoseassistingthemhavespendtwentyyearsonDaphneMajor,anislandintheGalapagosstudyingnaturalselection.Theyrecognizeeachindividualbirdontheisland,whentherearefourhundredatthetimeoftheauthor'svisit,orwhenthereareoverathousand.Theyhaveobservedabouttwentygenerationsoffinches--continuously.JonathanWeinerfollowsthesescientistsastheywatchDarwin'sfinchesandcomeupwithanewunderstandingoflifeitself.