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.

Water quality top priority; DNR board secretary promises

The state Department of Natural Resources’ new secretary said Wednesday that combating water pollution is his top priority.

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.

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.

Winter road salt seeping into drinking water, researchers say
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The Milwaukee River and Lake Michigan source drinking water for about a million people in southeast Wisconsin. Researchers say salt from winter storms is seeping into it and, ultimately, into your home.

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.

USDA approves vaccine for honeybees, a first in the U.S.

Scientists say the vaccine will protect them from disease that can ravage colonies in as little as three weeks.

WATCH: Hawaii’s Kilauea volcano erupts again

The U.S. Geological Survey said Thursday that Hawaii's Kilauea began erupting again. 

Northern California hit by magnitude 5.4 earthquake New Year's Day

The New Year brought an earthquake to Northern California Sunday morning. A magnitude 5.4 quake hit at 10:35 a.m. about 9.3 miles southeast of Rio Dell, USGS said.

EPA investigating Colorado air pollution regulations for discrimination

The EPA is probing Colorado’s oversight of the state’s biggest polluters and whether the effect of that pollution on Hispanic residents and other racial minorities is discriminatory.

Climate in 2022: Extreme heat, drought, floods fueled by warming planet

By October, the U.S. had experienced 15 major weather disasters with losses exceeding $1 billion in damage each, according to NOAA.

Wisconsin DNR; Sheboygan County's Adam Payne appointed secretary

Gov. Tony Evers appointed Sheboygan County Administrator Adam Payne to lead the Wisconsin DNR, replacing the retired Preston Cole.