Geologists found evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of years ago.

BAKU, Azerbaijan — Even as Earth sets new heat records, humanity this year is pumping 330 million tons (300 million metric tons) more carbon dioxide into the air by burning fossil fuels than it did last year. This year the world is on track to put 41.2 ...

There is a 50% chance that global warming will consistently exceed 1.5 degrees Celsius in the next six years, according to a new report.

Global carbon dioxide emissions, including those from burning fossil fuels, are set to hit a record high this year, pulling the world further off course from averting more destructive climate extremes,