Climatology

FILE - In this Jan. 5, 2016, file photo, Chris Lene sweeps water out of one of the businesses in the building he owns that was flooded by rainwater in Sacramento, Calif. Climate change is making stronger El Ninos, which change weather worldwide and heat up an already warming planet, according a study in Proceedings of the National Academy of Sciences on Monday, Oct. 21, 2019. (AP Photo/Rich Pedroncelli, File)

Super scoopers make drops on the Saddleridge fire in Placerita Canyon near Newhall, Calif., Friday, Oct. 11, 2019. (David Crane/The Orange County Register via AP)

Pope Francis celebrates an opening Mass for the Amazon synod, in St. Peter's Basilica, at the Vatican, Sunday, Oct. 6, 2019. Pope Francis is opening a divisive meeting on preserving the Amazon and ministering to its indigenous peoples, as he fends off attacks from conservatives who are opposed to his ecological agenda.(AP Photo/Andrew Medichini)

Canadian Prime Minister Justin Trudeau speaks Swedish environmental activist Greta Thunberg in Montreal on Friday, Sept. 27, 2019. Thunberg says she delivered the same message to Trudeau that she gives to all politicians -- that he needs to listen to the science and act on it. (Ryan Remiorz/The Canadian Press via AP)

FILE - Jan. 13, 2018 file photo, U.N. Secretary-General Antonio Guterres talks to the media during a join declaration with the Colombian president, in Bogota, Colombia. Saying humanity is waging war with the planet, the head of the United Nations isn’t planning to let just any world leader speak about climate change in Monday’s special “action summit.” Guterres says only those with new specific and bold plans can command the podium and the ever-warming world’s attention. (AP Photo/Fernando Vergara, File)

Swedish environmental activist Greta Thunberg, attends an interview with AP before the Climate Strike, at City Hall, Friday, Sept. 20, 2019 in New York.  Tens of thousands of protesters joined rallies on Friday as a day of worldwide demonstrations calling for action against climate change began ahead of a U.N. summit in New York. (AP Photo/Eduardo Munoz Alvarez)

Brazil's Minister of the Environment Ricardo Salles smiles for a photo during an interview with The Associated Press in Washington, Friday, Sept. 20, 2019. After facing international criticism for steeply rising rates of deforestation in the Amazon, Salles is visiting the U.S., France, Germany, and the United Kingdom to insist that there’s no big problem. (AP Photo/Jon Elswick

FILE - In this Friday, Sept. 13, 2019 file photo, young climate activists march with signs during a rally near the White House in Washington. At left is the Washington Monument. In late September 2019, there will be climate strikes, climate summits, climate debates, a dire climate science report, climate pledges by countries and businesses, promises of climate financial help and more between now and next Friday. There will even be a bit of climate poetry, film and music. (AP Photo/Susan Walsh)

The German icebreaker and research vessel Polarstern at shore in Tromso, Norway, Wednesday Sept. 19, 2019. Scientists from more than a dozen nations are preparing to launch the biggest and most complex research expedition ever attempted in the central Arctic. About 100 researchers will set sail Friday from Tromso, Norway, aboard the German icebreaker Polarstern in an effort to understand how climate change is affecting the Arctic and regions beyond. (Rune Stoltz Bertinussen/NTB Scanpix via AP)

Valentino Ingraham washes clothing to remove salt and dirt amid the rubble of his mother's property destroyed by Hurricane Dorian in Rocky Creek East End, Grand Bahama, Bahamas, Sunday, Sept. 8, 2019. The motors of his family's boats were also destroyed. (AP Photo/Ramon Espinosa)