Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Mechanical Engineering Professor Alan McGaughey of Carnegie Mellon University recently coordinated the Phonon Olympics, ...

The mystery deepens when we discover that ancient Greek temples, built thousands of miles away and centuries later, encoded the same geodetic principles—their measurements directly derived from the ...

These Q&As cover recent questions about an SDR allocation. For additional background and basic facts please refer to the SDR factsheet. A direct benefit of a general SDR allocation, and indeed the ...

The Light Relief was a GODSEND when I first purchased them. I have Fibromyalgia and hurt all over my body. I purchased the first unit and it helped so much that I purchased three more. They each ...