Lady Emerald Devon
Nomad
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Jul-29-2007 10:10
In 1998, researchers found a new mosquito species in the London Underground, descended from ancestors that flew in when the tunnels were dug 100 years ago. Once bird-feeders, they now feast on a menu of rats, mice, and people.
They rarely interbreed with their aboveground colleagues. Their DNA actually varies from one subway line to another.
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