"The American exit officially took effect Wednesday. If Joseph R. Biden Jr. wins the election and rejoins the pact, the United States will have a lot of catching up to do."

"Even if Joe Biden wins the White House, his ambitious climate agenda could be thwarted by a Senate that is increasingly likely to remain in Republican control."

"Some research shows increasing political divides this year as a pandemic thrusts science into the election spotlight."

"President Vladimir Putin said on Tuesday Russia wanted to retain its “superiority” in the Arctic and that it planned to renew its icebreaker fleet to bolster its presence there."

"Vice-President Hamilton Mourao on Tuesday defended Brazil’s environmental policies, saying the country was working to protect the Amazon rain forest and adding nothing will change if Democrat Joe Biden wins the U.S. presidential election."

"In Utah, it’s air pollution; Missouri, it’s extreme weather; in California, it’s sea level rise. And the planet’s future, voters say, hangs in the balance. "

"Hurricane Eta ripped roofs from homes, unleashed major flooding and caused landslides as it battered the coastline of Nicaragua and neighboring Honduras on Tuesday, reportedly killing at least three people and putting dozens of fishermen in peril."

"Au revoir, Paris Agreement. As of Wednesday, under United Nations rules, the United States is officially out of the global climate accord. Here’s a look at how it happened, what it means and what might happen next."

"Hurricane Eta has made landfall on the northeast coast of Nicaragua near the port of Puerto Cabezas, the head of the government’s disaster management agency SINAPRED said on Tuesday."

"As the Trump administration went about weakening vehicle fuel economy standards earlier this year, the climatologist John Christy made his own calculations of how the change would affect Earth's climate. His conclusion: Not at all."