"Ned Rozell"

If a lake drains on top of the world, will anyone hear it?

As he contemplates another long snowmachine journey, Matthew Sturm might consider packing a raincoat. Rain fell in Interior Alaska a few weeks before his trip, glazing supercooled highways and forming a crust on the snowpack.

Fairbanks’s air turns bitter every winter as we fill it with woodsmoke and other things, but just down the road Denali National Park has the clearest air measured among America’s monitored national parks.

On a February day long ago, a family living in a sod hut near the Arctic Ocean saw blocks of sea ice bulldozing their way onto shore.

Satellite data has confirmed that the amount of freshwater released into the Gulf of Alaska from streams and rivers in Alaska and northern Canada is about 1.5 times what the Mississippi River dumps into the Gulf of Mexico each year.

North America’s highest mountain should be a volcano.