In recent years, "atmospheric river" has become used much more frequently in scientific papers and in media coverage.

Speaking of improbable versus impossible, here's a familiar thought experiment. If you had an infinite number of monkeys with typewriters, or one monkey with infinite time, would they eventually type ...

The Arctic is heating up, both because of climate change and tricky global politics. That's partly why the U.S. appointed its first ambassador-at-large to oversee Arctic affairs. Mike Sfraga was sworn ...