Darwin Comes to Town: How the Urban Jungle Drives Evolution

*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 aroun...