A top U.N. scientist on Thursday shrugged off an online quip from U.S. President Donald Trump that questioned global warming, saying a U.S. government report will show the “fundamental impacts of climate change on the U.S. continent.” Officials at the World Meteorological Organization also said environmentally minded efforts by the state of California, in parts of the financial sector, among grassroots activists and others will have more of an impact to help the fight against climate change than “political disturbance” and “discourse” will impede it. The science, they said, will have the last word. Some of that science comes Friday...