Ashley Westerman

Two years ago an American robotics company challenged a Japanese robotics company to a duel.

Their weapons of choice? Giant robots.

This long-awaited match between the monstrous robots — built by MegaBots Inc. of the U.S. and by Suidobashi Heavy Industry of Japan — will be broadcast on Tuesday via the online steaming site, Twitch. It's billed as the "first ever giant robot fight."

The number of people who leave their countries to work abroad is soaring, according to the United Nations. More than 200 million people now live outside their country of origin, up from 150 million a decade ago.

And migration isn't just from poor countries to rich countries anymore. There also is significant migration from rich country to rich country — and even from poor country to poor.

Beginning Thursday, the U.N. will hold a high-level meeting on the subject in New York.

Moving For Work