In 2011, New York covered five acres of Lake George with more than 700 mats to suffocate invasive Asian clams; 97% died, but the invader later spread to 27 locations

• Representative Image (AI-generated)When invasive Asian clams were discovered in Lake George, New York, in 2010, researchers moved quickly to test whether covering the lakebed could stop the species from spreading.
• The treatment killed 97% of the Asian clams found in the treated area.