Climate

FILE - In this April 10, 2019, file photo, rush-hour traffic heads east, left, and west, right, along the Schuylkill Expressway in Philadelphia. A spokesman for Pennsylvania's governor said the state was committed to being a part of Transportation and Climate Initiative conversations. But a growing number of Northeast governors have concerns the TCI could increase gas prices, and raise doubts about how effective it would be in capping pollution. The initiative is aimed at a dozen Northeast and mid-Atlantic states and would take effect in 2022. (AP Photo/Jacqueline Larma, File)

FILE - In this April 10, 2019, file photo, rush-hour traffic heads east, left, and west, right, along the Schuylkill Expressway in Philadelphia. A spokesman for Pennsylvania's governor said the state was committed to being a part of Transportation and Climate Initiative conversations. But a growing number of Northeast governors have concerns the TCI could increase gas prices, and raise doubts about how effective it would be in capping pollution. The initiative is aimed at a dozen Northeast and mid-Atlantic states and would take effect in 2022. (AP Photo/Jacqueline Larma, File)

FILE - This Sept. 6, 2012, file photo shows the Amazon logo in Santa Monica, Calif. Hundreds of employees are openly criticizing Amazon's record on climate change despite what they say is a company policy that puts their jobs at risk for speaking out. On Sunday, Jan. 26, 2020, more than 300 employees of the online retail giant signed their names and job titles to statements on blog post on Medium. The online protest was organized by a group called Amazon Employees For Climate Justice, an advocacy group founded by Amazon workers that earlier this month. (AP Photo/Reed Saxon, File)

Democratic Presidential candidate Sen. Elizabeth Warren, D-Mass., speaks to the media before attending the impeachment trial of President Donald Trump on charges of abuse of power and obstruction of Congress, Thursday, Jan. 23, 2020, on Capitol Hill in Washington. (AP Photo/ Jacquelyn Martin)

Climate activists Isabelle Axelsson, Loukina Tille, Vanessa Nakate, Greta Thunberg, and Luisa Neubaue,, from left, arrive for a news conference in Davos, Switzerland, Friday, Jan. 24, 2020. The 50th annual meeting of the forum is taking place in Davos from Jan. 21 until Jan. 24, 2020 (AP Photo/Markus Schreiber)

Climate activists Luisa Neubauer, Greta Thunberg, Isabelle Axelsson and Loukina Tille, from left, arrive for a news conference in Davos, Switzerland, Friday, Jan. 24, 2020. The 50th annual meeting of the forum is taking place in Davos from Jan. 21 until Jan. 24, 2020 (AP Photo/Markus Schreiber)

In this photo taken Thursday, Jan. 16, 2020, a Samburu boy uses a wooden stick to try to swat a swarm of desert locusts filling the air, as he herds his camel near the village of Sissia, in Samburu county, Kenya. The most serious outbreak of desert locusts in 25 years is spreading across East Africa and posing an unprecedented threat to food security in some of the world's most vulnerable countries, authorities say, with unusual climate conditions partly to blame. (AP Photo/Patrick Ngugi)