Transition into El Nino could lead to record heat around globe

Fishermen first used the term El Niño off the coast of South America to describe the unusually warm water temperatures before Christmas.

Green comet sighting: Here's when to see this celestial view unlikely to return for millions of years

This celestial sighting is a bit like space-speed dating. Astronomers only just learned of Comet C/2022 E3's existence, and it will be gone before we know it. Learn how it was discovered and why a naked-eye comet is rare.

Feds deny emergency request for ship-speed restrictions to protect whales

The National Oceanic and Atmospheric Administration is considering new rules designed to stop large ships from colliding with North Atlantic right whales.

Feds send $930 million to curb 'crisis' of wildfires in West

The U.S. is directing $930 million toward reducing wildfire dangers in 10 western states by clearing trees and underbrush from national forests as officials struggle to protect communities from destructive infernos being made worse by climate change.

Greenland is the warmest it's been in more than 1000 years, ice core data shows

Scientists say warming in Greenland in the past may have been masked by local weather variability. But not any more. Climate change is blowing that away.

Greta Thunberg carried away by police at German coal mine protest

Swedish climate activist Great Thunberg was among hundreds of people on Tuesday who resumed anti-mining protests in western German after weekend demonstrations.

Greta Thunberg removed by German police from site of mass-climate change protest at coal mine

German police reportedly removed 20-year-old climate change activist Greta Thunberg from the site of a mass protest over the demolition of an abandoned village for the expansion of a coal mine. 

2022 among warmest years on record; experts warn warmer temps to come

Government science teams say that 2022 didn't quite set a record for heat, but it was in the top five or six warmest on record depending on who's doing the measuring.

Ozone hole should fully mend by 2066, UN says

A United Nations scientific report says Earth's protective ozone layer is slowly but noticeably healing.

Christmas tree pickup, recycling tips for after the holidays

Recycling options vary among communities but here are some general tips on how to get rid of your real tree.

Your holiday dinner may contain thousands of microplastic particles, researchers say

Researchers in the U.K. are warning about how microplastics can infiltrate our food, conducting an experiment that found about 230,000 microplastic particles in a traditional roast chicken dinner with sides.

Iconic Berlin Christmas tree decapitated by climate activists

The climate activists used a hydraulic lift and a hand saw to cut 6 feet off the top of the tree and hang up a banner stating: “This is only the tip of the Christmas tree.”