Countries at the United Nations climate summit amped up the pressure on themselves on Friday by entering the last scheduled day of talks with no visible progress on their chief goals.

Just as a simple lever can move heavy objects, rich nations are hoping another kind of leverage — the financial sort — can help them come up with the money that poorer nations need to cope with climate change.

Cities in Asia and the United States emit the most heat-trapping gas that feeds climate change, with Shanghai the most polluting, according to new data that combines observations and artificial intelligence.

Global efforts to fight climate change stumbled but survived the last time Donald Trump was elected president and withdrew the United States from an international climate agreement. Other countries, states, cities and businesses picked up some of the slack.

The actions in Berlin, Brussels, Rio de Janeiro, New Delhi and many other cities were being organized by the youth-led group Fridays for Future, and included the group's New York chapter, which planned a march across the Brooklyn Bridge followed by a rally that organizers hoped would attract at least 1,000 people. More protests were planned Saturday and Sunday.

The amount and proportion of the powerful heat-trapping gas methane that humans spew into the atmosphere is rising, helping to turbocharge climate change, a new study finds.

Summer 2024 sweltered to Earth's hottest on record, making it even more likely that this year will end up as the warmest humanity has measured, European climate service Copernicus reported on Friday.

Moves toward phasing out fossil fuel use and gas-powered engines, for example, haven't worked by themselves, but they are more successful when combined with some kind of energy tax or additional cost system, study authors concluded in an exhaustive analysis of global emissions, climate policies and laws.

Nearly half a million people a year die worldwide from heat related deaths, far more than other weather extremes such as hurricanes, and this is likely an underestimate, a new report by 10 U.N. agencies said.

The European climate service Copernicus calculated that Tuesday’s global average temperature was 0.01 Celsius (0.01 Fahrenheit) lower than Monday's all-time high of 17.16 degrees Celsius (62.8 degrees Fahrenheit), which was .06 degrees Celsius hotter (0.1 degrees Fahrenheit) than Sunday.