"The United Nations agency charged with overseeing commercial air travel across the globe issued new efficiency standards on Monday to reduce emissions from commercial airlines. The standards, if given final approval later this year, will reduce carbon emissions by 650 million tons between 2020 and 2040, according to a White House statement.The new standards, set by the U.N.s International Civil Aviation Organization ICAO, are most stringent for the large aircraft operated by commercial carriers. Manufacturers would be required to reduce emissions by a third for planes in that category and currently in production beginning in 2023, according to a Reuters report. The standards would apply to new designs released beginning in 2020." - TIME