Arctic observations over 2003–2024 identify three aerosol regimes with contrasting responses to warming and cloud condensation nuclei trends. Model projections suggest that the aerosol–cloud feedbacks...

Her promises about “election integrity” didn’t pan out so well.

Community Note: “Paxton's office initially recommended 1 day in jail.”

On the technological, diplomatic and biological fronts, Trump is creating a disaster.

White House calls the spots public-service ads, but critics argue using taxpayer money for campaign-like messaging may violate federal law.