Forty years of satellite data show that 2020 was just the latest in a decades-long decline of Arctic sea ice.

A study of oppositely charged magnetic field bands, moving in the sun's northern and southern hemispheres, suggests the coming sunspot cycle - Cycle 25 - will be a particularly strong one. This result contradicts an earlier expert forecast, suggesting a weak Cycle 25.

A new strain of the virus that causes Covid-19 appears to be spreading fast in the the UK. Why it matters that the coronavirus is changing, and what it means for vaccine effectiveness.

A severe climate change event on Venus may have transformed an Earth-like climate to the current uninhabitable-to-humans state.

Early ice retreat amid warm Arctic air temperatures set the stage for the slow refreeze in 2020.

November 30 marked the official end of the record-breaking 2020 Atlantic hurricane season, although more storms are still possible. Why did 2020 have so many storms? And what does climate change have to do with it?

Being indoors with other people is a recipe for spreading the coronavirus. But removing airborne particles through proper ventilation and air filtration can reduce some of that risk.

New guidance from the CDC says that 15 minutes of exposure – regardless of whether that occurs at one time – can result in transmission of the coronavirus.

SpaceX's satellites will populate the night sky, affecting how we observe the stars. And this is just the beginning of private satellite mega-constellations.

New analysis of data gathered from New Horizons' 2015 flyby of Pluto shows evidence of Earth-like snow-capped mountains and the potential for glaciers made of methane ice.