Denali National Park has closed to visitors due to the rapidly spreading Riley Fire near its entrance, prompting evacuations and a significant firefighting response.

The crow was on the beach hiding near a driftwood stump and was unable to fly and struggled to walk. These are signs associated with highly pathogenic avian influenza (HPAI) also commonly referred to as "bird flu". See video.

A fast-moving wildfire near Elliot Highway in Fairbanks, Alaska, has led to a Level 3 evacuation order for residents, with the fire rapidly growing to over a thousand acres.

Loaded with up to 38,000 tons of oil, the 245 meter long tanker Shturman Skuratov makes this year's first transit shipment on the Northern Sea Route. Despite major concentrations of sea-ice, the tanker sails without icebreaker assistance.

A research vessel, Norseman II, was trapped in unusually dense sea ice for 14 days off the Seward Peninsula coast during a Pacific walrus study, but is now en route to Nome for repairs.

New Hampshire officials issued two warnings of potentially dangerous algae blooms along parts of Lake Winnipesaukee, the state’s largest lake. The New Hampshire Department of Environmental Services said on Thursday it detected high...

Sakha is now the fourth region in the Far East where a state of emergency is currently in place due to wildfires. The other three are the Zabaykalsky and Amur regions, as well as the republic of Buryatia. Russia’s wildfire season officially began in early March. By mid-April, regions in the Far East recorded nearly twice as many fires as they had during the same period last year, with most blazes caused by human negligence.

It has been a grim spring for tornadoes in the U.S. April had the second-highest number of tornadoes for that month on record in the country. While tornadoes are not unheard of in Maryland, they are relatively rare — especially outbreaks of the volume seen Wednesday night.

Is this a sign of more to come? Land changes raises questions about possible causes.

A third person in the US has tested positive for bird flu linked to an outbreak in dairy cattle, indicating possible cow-to-human transmission.

An unusually large Noctiluca bloom in Kasaan Bay. Noctiluca scintillans is a non-toxic algae bloom, generally considered harmless to humans.

A devastating landslide in Papua New Guinea buried over 2,000 people, prompting the government to seek international aid amidst challenges posed by unreliable census data and the destruction of a main highway.

Residents of Fort Nelson, B.C., are urged to evacuate immediately due to a rapidly escalating wildfire, exacerbated by high winds and continuous drought conditions.

The Kuskokwim River breakup has led to widespread flooding, affecting roads and drinking water in several communities, with Kwethluk experiencing significant impacts.

A 10-mile ice jam on the Lower Kuskokwim River has caused severe flooding in Tuluksak, with the area experiencing its worst flooding in over a decade.

Southern Brazil is grappling with severe flooding, with further storms and heavy rains forecasted, causing widespread displacement and damage.

Before she knew what was happening, a large female killer whale lifted Bloom’s paddleboard up out of the water. “And at that moment it was like terror,” Bloom said.

Alaska experiences unusual weather with multiple false springs, marked by warm periods followed by heavy snow or cold, casting doubt on the arrival of summer.

LEO Member Jeffrey Luther has been documenting erosion along the Noatak River for many years. His drone footage this spring captures new bank erosion features and icicle formations.

The FDA found pasteurized milk containing inactive bird flu virus remnants from infected dairy cows, but maintains the milk supply is safe.