Three big oil companies announced they would drop the exploration leases they won for the Arctic National Wildlife Refuge after spending years to get access to the sensitive region in northern Alaska.
The Washington Post traveled along the river, from its start to its finish, to examine how people and places are coping with a shrinking lifeline in a hotter and drier landscape.
An environmental group sued the Trump administration Thursday for failing to designate critical habitat for two species of seals that rely on sea ice off Alaska's northwest coast.