Here's a good article on that topic: Planet of weeds Tallying the losses of Earth’s animals and plants By David Quammen/Harpers Magazine http://courses.botany

Here's a good article on that topic: Planet of weeds Tallying the losses of Earth’s animals and plants By David Quammen/Harpers Magazine http://courses.botany.wisc.edu/botany_422/readings/Quammen1998.pdf http://courses.botany.wisc.edu/botany_422/readings/Quammen19...