Former national security adviser Robert O'Brien breaks down President-elect Donald Trump's talks about purchasing Greenland on 'Kudlow.' ...

For years, glaciologist Sridhar Anandakrishnan has been studying the massive Thwaites Glacier in Antarctica, often referred ...

If you really, really, really love to hum “Auld Lang Syne,” here's a look at when to celebrate over and over and over again ...

As Earth grows warmer, its ground is becoming drier and saltier, with profound consequences for the planet’s 8 billion ...

With President Jimmy Carter’s passing and Donald Trump about to return to the White House, it’s a good time to recall a phone ...