Darwin Comes to Town

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*Carrion crows in the Japanese city of Sendai have learned to use passing traffic to crack nuts.*Lizards in Puerto Rico are evolving feet that better grip surfaces like concrete.*Europe's urban blackbirds sing at a higher pitch than their rural cousins, to be heardover the din of traffic.How is this happening?Menno Schilthuizen is one of a growing number of "urban ecologists" studying how our manmade environments are accelerating and changing the evolution of the animals and plants around us. In Darwin Comes to Town, he takes us around the world for an up-close look at just how stunningly flexible and swift-moving natural selection can be.With human populations growing, we're having an increasing impact on global ecosystems, and nowhere do these impacts overlap as much as they do in cities. The urban environment is about as extreme as it gets, and the wild animals and plants that live side-by-side with us need to adapt to a whole...