Background Articles

"Global-mean surface air temperatures for the first days of June 2023 were the highest in the ERA5 data record for early June by a substantial margin", said Copernicus. Some of the unit's data goes back as far as 1950.

Dispersants may break up an oil slick, sparing some birds and wildlife at the surface, but may increase the oil contamination for species that live lower in the water column. The toxicity of dispersants themselves is also a concern for cleanup workers and other wildlife. A group of Alaskans filed a lawsuit in 2020 to force the EPA to rewrite the rules to take into account research on the long-term effects of dispersants in Prince William Sound and elsewhere.

Now, for the first time, researchers have concrete evidence that northern pike could use the ocean to move between freshwater Alaska habitats.

Biologists and others are hoping that a new phone app will encourage Alaskans to help map fish species living in the state's rivers and streams.

A group of Indigenous communities from Alaska and B.C. has declared a state of emergency related to Pacific salmon populations, and says First Nations need to be more involved in managing traditional resources. 

Those studying ticks in Alaska currently are more concerned about non-native ticks hitching a ride on pets that arrive in the state from Outside, and infecting wildlife here.

Ice lies thick on the water as nuclear powered icebreakers "Sibir" and "Arktika" escort LNG carrier "Fedor Litke" into the Vilkitsky Strait en route to a Northeast Asian port.

Chinook (king) and chum are the major salmon species on the Yukon and Kuskokwim. They’ve been at historically low numbers in both rivers for years. The coho (silver) returns have also dropped.This will be the fourth year subsistence fishing has been closed or severely restricted on both rivers. The region is bracing for another dismal subsistence harvest.

For close to four millennia, "clam gardens" on beaches on the west coast of B.C. have provided First Nations with a supply of not just clams but other types of seafood. Scientific experimentation by researchers from Simon Fraser University, in collaboration with Coastal Salish First Nations, indicates clam gardens help sea life stay cooler. The research aims to show how ancient Indigenous practices offer a modern-day solution to coping with climate change.

The highly pathogenic disease circling the globe stands out for its effects on wild birds, and experts say Alaskans should be on the lookout for cases.

Hurtigruten Norway says the first zero-emission coastal cruise vessels will be sailing in 2030.

The air quality index, a U.S. Environmental Protection Agency metric for air pollution, exceeded a staggering 400 at times in Syracuse, New York City and Pennsylvania’s Lehigh Valley. A level of 50 or under is considered good; anything over 300 is considered “hazardous,” when even healthy people are advised to curtail outdoor physical activity.

The Arctic Ocean could be ice-free in summer by the 2030s, even if we do a good job of reducing emissions between now and then.

Lingering snow and cloudy days resulted in temperatures about 3.5 degrees below the statewide average from March through May.

Following a thaw slump, the water becomes cloudy and full of sediment, potentially suffocating the eggs of spawning sheefish. Scientists are concerned that permafrost thaw could lead to declines in the sheefish population, a staple food for many Alaskans.

A study by the Yukon-Kuskokwim Health Corp and the CDC found that COVID vaccination was 92% effective in preventing hospitalizations and extremely effective at preventing symptomatic cases among the mostly Yupik residents of the region, with booster shots restoring protection against symptomatic cases.

When most people consider the arctic, or high-altitude mountain landscapes, they think of endless snow, ice and bare rock. But pastel-coloured flowers, sometimes just a few millimetres wide, bloom in these dramatic places too. The miniature flowers not only weather some of the toughest habitats on Earth, but can also help engineer the landscape for other species.

As Alaskan permafrost warms, hibernating arctic ground squirrels generate less heat, causing females to emerge from hibernation up to 10 days before their male counterparts – a mismatch that could have large, cascading ecological impacts. While reduced thermogenesis due to warming temperatures could allow the squirrels to conserve energy and, thus, increase winter survival, a shortened hibernation season could also increase the exposure of the animals to hungry predators, altering mortality rates, particularly for earlier emerging female squirrels. The phenological mismatch between the sexes may also disrupt reproductive rates. And over longer time scales, continued warming in the Arctic may lead to changes in male squirrel seasonal behaviors, say the authors.

Homer police confirmed the Wednesday capture of the “wanted fugitive and somewhat local celebrity," otherwise known as an invasive species.

Tromsø IL thought the municipality would reuse the deck. Now they will probably have to pay over a million kroner to have it removed.