About 2,000 people participated in the March for Science in Anchorage on Saturday. Participants carried signs talking about scientific contributions to medicine, such as “Got the Plague?! Ya, me neither! Thank a scientist!” Other signs addressed the impacts of climate change saying “There is no Planet B” and “The oceans are rising and so are we.” Listen now

The Statewide Trails Conference opens Thursday in Anchorage and will focus on issues such as making trails sustainable and active transportation. It brings together land managers, trail users, and trail builders for a three-day event.

Yellow cedar trees grow from the top of California, all the way to Alaska, and according to a recent study, the Southeast part of the state could be the hardest hit with yellow cedar’s decline, due to the planet heating up. The U.S. Fish and Wildlife Service has been petitioned to put yellow cedar on the endangered species list. The wood is commercially valuable. It’s culturally valuable, too. Listen now

2016 was the warmest year in Alaska since the National Weather Service began keeping records in the state more than a century ago. Two weather-service climate specialists say that’s mainly because of extraordinarily warm ocean water, which in turn helped generate above-normal precipitation – especially in the Interior. Listen now

A group of Ketchikan good Samaritans banded together last week to help a humpback whale that had become tangled in a barge anchor cable off Prince of Wales Island. Listen now

Environmental groups and the U.S. Environmental Protection Agency have reached an agreement that settles one of two active lawsuits aimed at forcing the agency to take overdue action on Fairbanks-North Pole area air quality. Localized, but extreme wintertime episodes of fine particulate pollution due to wood and fossil fuel burning emissions have long plagued the communities. Clean air advocates see the legal action as a small win in a long-running effort to reduce pollution. Listen now

The U.S. Forest Service is moving forward with a project to restore a stream damaged by decades-old logging and road-building south of Petersburg. The work will likely mean logging some other trees on another part of the island, and that’s generated some opposition.

Alaska’s Department of Natural Resources has delayed renewing a two-year land use permit for the Pebble Limited Partnership to give state regulators more time to review an “extensive” number of public comments. Listen Now

A new study shows melting permafrost is changing the chemistry of the Yukon River, just one of many climate-related changes affecting the Yukon and beyond. Listen Now

The last commercial harvest of Pribilof Island blue king crab was in 1999. Extremely low population numbers have kept that fishery closed. Listen Now

The State of Alaska and a dozen Native organizations have filed a petition with the U.S. Supreme Court, asking it to overturn a ruling that designated vast swaths of coastal Alaska as critical habitat for polar bears.

Ancient microbes, unusual ice structures, mammoth bones — there’s a lot happening below the surface in the Fairbanks Permafrost Tunnel Research Facility. The underground laboratory, operated by the Army Corps of Engineers, is kept at a constant 27 degrees Fahrenheit.

Most people wouldn't expect coral to thrive in Southeast Alaska. But it exists in the silty waters of glacial fjords. Now scientists are wondering if the coral, which serves as important fish habitat, could be in danger from an invisible threat — ocean acidification. Listen Now

An appeals court today upheld a federal decision to list a species of ice seals as threatened under the Endangered Species Act. Listen Now

The U.S. Forest Service wrapped up objection hearings Wednesday on a plan that could shape the future of timber in the Tongass National Forest. Listen Now

Researchers from the University of Alaska Fairbanks were at Kincaid Beach in Anchorage to finish recovering the skeleton of the humpback whale that washed up there in July. Listen Now

Audubon Alaska recently released an atlas showing where the most valuable salmon streams and bird habitat are located in Southeast. It also identifies the biggest threats to those areas. Listen Now

Fairbanks area air quality advocates have filed another lawsuit aimed at forcing the Environmental Protection Agency to adhere to Clean Air Act deadlines. Listen Now

The weather has been beautiful in Southeast Alaska for two weeks straight. That is very unusual. September and October are normally the rainiest months in the region. Listen Now

The federal government is getting close to finalizing a plan that could shape the future of timber in the Tongass National Forest. Various stakeholders have given input through the years. But if the objection letters are any indication, several agencies and groups are still not content — for different reasons. Listen Now