America at 500: Where will we be in space in 2276?

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years ...

Nanobubbles cleaned up the Lincoln reflecting pool: Here's how they could be used on dying seas and lakes

Ahead of the 250th anniversary of the Declaration of Independence in the U.S., an ozone nanobubble system has been used to ...