Elodea was discovered in Alexander Lake in 2014 by researchers checking minnow traps. At the time, it covered 20 percent of the lake but now has spread to 90 percent.

An alarming number of gray whales have been found dead this year from Mexico to Alaska, triggering a federal investigation into what’s causing the die-off.

When temperatures soar this high above the Arctic Circle, it’s an attention-grabber.

"Its face was down in the mud and it was laboring to breathe. Its body condition was wasted and we could see its ribs."

"When we looked over the side of the boat, we saw clumps of mussels floating up the whole Tuksuk channel. No one has ever heard of something like this before."

“Smoke concentrations will be such that they could impact public health at times, according to an advisory issued by the state Division of Air Quality.

Belugas and narwhals can apparently breed. Scientists have confirmed the only known specimen of beluga-narwhal hybrid.

It is the first polar bear seen in the city in more than 40 years, according to local environmentalists.

While central Alberta is under a rainfall warning, thousands of people in Mackenzie County in northern Alberta are being evacuated from their homes in the face of aggressive and growing wildfires. 

A girl from Paso Robles, California, was bit by a sea lion in Pismo Beach on Friday near the pier. The animal that attacked likely had domoic acid poisoning, and will be treated at the Marine Mammal Center.

Chennai's severe water shortage has forced restaurants to shut and the city to scramble for solutions.

The fish, likely former aquarium pets, have attracted the attention of invasive-species managers.

A new study has found permafrost at outposts in the Canadian Arctic is thawing 70 years earlier than predicted.

This walrus was found by a local fisherman and reported by LEO Network to the US Fish and Wildlife Walrus Hotline. The carcass is thought to be too old for necropsy or sample collection.

Swarms of anchovy can be seen swimming through the South Sound.

Smoke from the North River fire is impacting outdoor air quality. The ADEC Division of Air Quality has issued an air quality advisory in effect from Tuesday, June 18, 2019 8:00 AM to Friday June 21, 2019 4:00 PM.

The Bristol Bay Times - Serving Dillingham, Naknek, King Salmon and Southwest villages

The fires are now raging some 10 to 15 kilometers from the megaslump crater - a large hole in the frozen Arctic soil which highlights the dramatic speed of thawing permafrost.

Tumor found in King Salmon (Oncorhynchus tshawytscha)

Potentially harmful blue-green algae has increased in lakes over the past week.