In a name-your-poison twist, a new study from the University of Illinois adds to the evidence that Chicago-area waterway pollution is slowing the relentless advance of the invasive silver carp. In a name-your-poison twist, a new study from the University of Illinois adds to the evidence that Chicago-area waterway pollution is slowing the relentless advance of the invasive silver carp. Plants & Animals Ecology Phys.org – latest science and technology news stories