Understanding Permafrost and Its Global Distribution Permafrost, a layer of soil that remains frozen year-round, covers an ...

President Donald Trump started his second administration with a blitz of policy actions to reorient the U.S. government.

Alaska's political leaders are cheering an executive order that aims to boost oil and gas drilling, mining and logging in the state. But environmental groups say Trump's policies are worrisome.

While it won't be as powerful of a display as the northern lights Vancouver saw last May, there is auroral activity in the ...