A rapid, multi-agency response is underway on St. George Island, Alaska, to investigate a multispecies mortality event linked to a harmful algal bloom, with concerns that paralytic shellfish poison (PSP) toxins may be affecting local wildlife and human health.

A grizzly bear wandering unusually close to Rankin Inlet was shot and killed by a local hunter after being spotted near the hamlet’s shooting range and Landing Lake. Mayor Harry Towtongie noted that grizzlies are increasingly common in the Kivalliq Region, potentially due to climate or environmental changes.

Observers in Baker Lake and Arviat recorded a yellow warbler on July 4 and a brown bat on July 6—species rarely seen above the tree line in Nunavut—highlighting ecological shifts in Arctic habitats.

Observers from a small plane reported unusual green color in lakes and ponds, raising concerns about lake health and the potential for invasive species.

Kodiak set a new one-day precipitation record on July 10, 2025, when 2.11 inches of rain fell—surpassing the previous July 10 record of 1.43 inches set in 1919.

Avannaata emergency services warn residents in Innaarsuit to avoid gathering near the harbour shop due to risk of iceberg calving triggering large waves.

The increase in tree "fluff" is likely a stress response from poplars, aspen and willows reacting to the dry conditions from the past few years, according to the N.W.T.'s department of Environment and Climate Change.

An Arctic fox found at Alkepynten, Svalbard, has tested positive for rabies, the Norwegian Veterinary Institute reports.

Observers report an increase in the abundance and height of cow parsnip, also know as pushki or wild celery. These conditions may be a signal of warming and wetter climate trends.

A small but potentially environmentally threatening crab is expanding its area of influence in Alaska.

The 2,000-acre fire and others north of the Brooks Range fit a pattern of increasing wildfires in the treeless landscape. While most Alaska tundra fires are south of the Brooks Range, in Northwest or Western Alaska, fires north of the Brooks Range are becoming more common and bigger, according to scientists.

A juvenile brown bear entered Nome’s streets on July 8, 2025, and was fatally shot by Alaska Department of Fish and Game and Nome Police after posing a public safety threat. This was the first urban bear dispatch of the year amid reports of heightened bear activity around town.

During this year's reindeer count in Adventdalen, researcher Åshild Ønvik Pedersen discovered an unprecedented number of reindeer carcasses, indicating a significant die-off.

Angus Lake near Sachs Harbour rapidly drained over the course of early July 2025 after permafrost thaw created a water channel, emptying the lake into the Sachs River and leaving a large crater.

Air Greenland has canceled all flights on July 6 due to a severe storm in Nuuk with gusts up to 56 knots and widespread turbulence along Greenland’s west coast, affecting travelers across the region.

Flash floods kill an average of 127 people annually in the U.S., and nearly half of all deaths involve vehicles. People don’t realize that it doesn’t take much water to strand or even sweep away a car.

The Kachemak Bay National Estuarine Research Reserve detected Pseudo-nitzschia at bloom levels in Kachemak Bay starting July 4. This diatom can produce the toxin domoic acid, associated with amnesic shellfish poisoning, though toxin production is not yet confirmed. Observed bird deaths and marine mammal strandings have spurred collection of mussel samples for lab testing.

After a snowy winter followed by a week of heavy rain, over 40 cabins near Lake Françoys-Malherbe outside Salluit, Nunavik, have been flooded, with some sitting in water and one appearing to float.

This marks the first summer that the weather service in Alaska has issued heat advisories to share with residents what they can do to mitigate hot conditions. Climate scientists say those notices are likely to become common.

European Starlings, an invasive species, have been observed in Anchorage, Alaska, where they compete with native birds for resources. Their presence is concerning due to their aggressive behavior and potential to form large flocks, prompting local monitoring and reporting efforts.