Trump’s fixation on Greenland isn’t new. In 1946, President Harry Truman proposed buying the island for $100 million in ...

Spoiler: it’s tricky. Common valuation approaches run into hurdles when dealing with something as complex as an entire ...

The space agency said it is considering two options that would cost in the $6 billion to $7 billion range, including one that ...

NASA's mission to return samples from Mars and potentially discover the first signs of alien life has a new timeline. The ...

How much did it cost U.S. to acquire its territories? What to know as Trump escalates calls to take Greenland - The U.S. has ...