Australia is suing 3M for more than 2 billion Australian dollars ($1.4 billion) over so-called "forever chemical" contamination from firefighting foam at defense bases, the government says.

The Australian government is suing US manufacturing giant 3M for AU$2bn in damages (US$1.4bn; £1.1bn) over its alleged use of toxic "forever chemicals" in firefighting foam that contaminated dozens of...