Peter Barca, a Democrat with a history of serving Wisconsin, including in Congress in the 1990s, has announced his candidacy for Congress again on Thursday.

Pollution from the plastics industry is a major force behind the heating of the planet, according to a new report from the federal government. The industry releases about four times as many planet-warming chemicals as the airline industry, according to the paper from scientists at the Lawrence Berkeley National Lab. Its emissions are equivalent to...