Amid escalating technological competition, the U.S. Air Force faces challenges in maintaining its traditional superiority ...

The biggest annual savings event offered by Amazon is going on now. Here are the deals you need to know about.

The biggest annual savings event offered by Amazon is now live, and we're tracking the sales you need to know about.

But something is missing.The lust for life, the excitement, that slight twinge of panic when your brain realizes that you might need to alter your course for a minute.After you blink away the double ...

We report an increase of the superfilamentation length of a focused terawatt laser beam using a multifocal phase mask. Optimized superfilaments extend the lengt ...