Emissions reduction

FILE-In this May 29, 2019 file photo the Tokyo Tower is lit up at dusk as rain clouds hover over Tokyo's skyline. Patricia Espinosa, Executive Secretary of the United Nations Framework Convention on Climate Change, on Tuesday chided Japan over its new plan to reduce greenhouse gas emission. Environmental campaigners say Tokyo's new proposal shows no real ambition to increase existing efforts. (AP Photo/Jae C. Hong)

Swedish climate activist Greta Thunberg, right, and European Commission President Ursula von der Leyen attend the weekly College of Commissioners meeting at EU headquarters in Brussels, Wednesday, March 4, 2020. European Commission President Ursula von der Leyen, who has put climate change at the top of her priorities and pledged to make Europe the first climate neutral continent by 2050, will present her plans on Wednesday. (AP Photo/Virginia Mayo)

Men work at a construction site with the Olympic rings in the background Tuesday, March 3, 2020, at Tokyo's Odaiba district. The spreading virus from China has put the Tokyo Olympics at risk. The Olympics are to open on July 24 - less than five months away. (AP Photo/Eugene Hoshiko)

Campaigners protest outside the Royal Courts of Justice where a Court of Appeal ruling is taking place on the Heathrow expansion row, in London, Thursday, Feb. 27, 2020. Britain's Court of Appeal is preparing to publish its decision in a case that could stall the 14 billion pound ($18 billion) plan to expand Heathrow Airport amid concerns about climate change, pollution and noise. (Stefan Rousseau/PA via AP)

FILE - In this Sunday, April 28, 2013 file photo, a Boeing 787 plane of the All Nippon Airways, ANA, prepares to land after a test flight at Haneda Airport in Tokyo. Japanese carrier ANA is ordering 20 Boeing 787 Dreamliner jets, bringing its fleet of the planes to 103 by 2025. (AP Photo/Shizuo Kambayashi, File)

Gov. Kate Brown of Oregon denounces a walkout by Republicans in the state Senate that prevented a quorum on Monday, Feb. 24, 2020 in Salem, Ore. Republican lawmakers are trying to doom a contentious climate change bill. Brown said the Republicans are not against the climate policy but are against the Democratic process. (AP Photo/Andrew Selsky)

Police officers stand near activists outside BP's headquarters to mark the first day of the oil company's new chief executive Bernard Looney, at St James' Square in London, Wednesday Feb. 5, 2020. Around 100 environmental activists mounted the peaceful protest in central London as Bernard Looney prepared to take up his new role. (Victoria Jones/PA via AP)

French President Emmanuel Macron delivers a speech at the Ecole Militaire Friday, Feb. 7, 2020 in Paris. French President Emmanuel Macron, who leads the European Union's only post-Brexit nuclear power, on Friday advocated a more coordinated EU defense strategy in which France, and its arsenal, would hold a central role. (AP Photo/Francois Mori, Pool)

Britain's Prime Minister Boris Johnson launches the upcoming UK-hosted COP26 UN Climate Summit that will take place in autumn 2020 in Glasgow, Scotland, during an announcement in London Tuesday Feb. 4, 2020. Johnson is expected to announce a target to stop selling new petrol and diesel vehicles by 2035, including hybrid vehicles for the first time. (Jeremy Selwyn/Pool via AP)