Quagga mussels threaten western U.S. waters, researcher reports
Tuesday, July 1, 2008 - 14:42
in Earth & Climate
Pipe-clogging invasive mussels caused up to $1.5 billion in damage across 23 states between 1989 and 2007. Now, fingernail-sized quagga mussels, a close relative of zebra mussels, have spread to the West and threaten to do even more damage.