May 28 (UPI) -- Australia launched a record $1.4 billion lawsuit against 3M in the United States and Australia accusing it of using per- and polyfluoroalkyl substances, so-called "forever chemicals," in firefighting foam used at 28 military bases. Announcing the government's largest ever civil suit , Attorney-General Michelle Rowland said the compensation being sought was to cover the substantial costs of the cleanup from a product she alleged 3M knowingly misled the government over, regarding