COP27 climate talks start in Egypt, as delegates arrive from around the world
Money will likely be the central tension in the U.N.'s COP27 climate negotiations
The U.N. chief tells the climate summit: Cooperate or perish
Developing countries want climate reparations. Here's what it could cost
COP-out: Who's Liable For Climate Change Destruction?
U.N. plan would help warn people in vulnerable countries about climate threats
Past 8 years were the warmest on record, U.N. agency says
Greta Thunberg: COP27 an opportunity for "greenwashing, lying and cheating"
An influential energy group sees reason for climate optimism
Here's how far behind the world is on reining in climate change
Greenhouse gases reach a new record as nations fall behind on climate pledges
The Nord Stream pipelines have stopped leaking. But the methane emitted broke records
Research shows oil field flaring emits nearly five times more methane than expected