Start your engines! Climate experts now blame rising temperatures on reduced emissions.

used in refrigeration, air conditioning, foam blowing, various aerosols, and other applications. The treaty, which is the only universally ratified treaty in the United Nations’ history, went into force on Jan. 1, 1989.

While coinciding with the Montreal Protocol’s ratification, sulfate aerosol emissions were chiefly driven down in Europe — by an estimated continue reading …