Plus, countries that encourage their students to study abroad usually do so with the hope that they will return and give back to their home economies.

BBC: The statistics of studying abroad

One of reasons NYC has improved schools dramatically is that unions are tough to deal with but if they can get things for their members they do give back in return to our public and kids.

FORBES: Bloomberg:Obama's Greatest Challenge is Education

That's the sort of return on investment NASA is proud to give back to America and the world.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth