Merely the size of a fingernail, with a striped pattern on their shells, zebra and quagga mussels have a powerful grip. They make their way into new bodies of water by clinging to the hulls of boats and ships. Once they invade a water body, they attach themselves to native mussels, causing them to suffocate. […] More »

After a thousand-plus kilometre invasion and destruction of U.S. ecosystems, Asian carp are now poised to enter Canada’s Great Lakes—where they could unleash incalculable and irreversible damage. Inside the desperate fight to stop the swarm. Four fish lay motionless on the metal slab in the laboratory, lying good side up. Their wide, recessed eyes are […] More »