story by Carl Zimmer
reports that humans may be driving evolutionary change in ways we didn't know.
A study by University
of Minnesota biologist
Emilie C. Snell-Rood
and colleagues found that when mice, voles,
shrews and bats
move from rural areas to
cities and towns, the brains of these species get bigger.
Animals colonizing in towns
and cities have to learn to
find food in buildings and other places their
ancestors never encountered, and they may have to travel farther for food and deal
with more complex navigation to get back home.
Read the story here.