Geo-engineering is being pursued by private companies looking to ward off climate change and/or gain carbon credits. But it ...

A new study shows TOI-270 d is a fiery rocky exoplanet, offering fresh insight into the galaxy’s most common planet type.

New research suggests ancient Mars may have been warm and wet, with rainfall or snowmelt carving its iconic valleys.

From Lowell Observatory to Kitt Peak to Mount Graham, here are the 11 best planetariums and observatories in Arizona and ...

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...

The first Earth Day is largely credited as one of the key moments that launched the modern environmental movement.

President Donald Trump’s administration on Thursday asked the Supreme Court to allow enforcement of a ban on transgender ...

From the daily newsletter: why we should be in the streets; and Pope Francis’s tangled relationship with Argentina.

Blue Prince is the puzzle sensation that’s taken the world by surprise, a genre-bending mix of roguelikes and environmental ...

Plastic pollution continues to overwhelm waste management systems, with potential health consequences for humans and wildlife ...

While the Statue of Liberty may not be submerged, low-lying places like Ellis Island could be underwater. By 2100, sea-level ...

I first thought Port St. Lucie's 'Heart in the Park' project was unoriginal. Now that it's nearly finished, my thinking has evolved.