The warplane-dropped nuclear gravity bomb known as the B61 has been fully modernized with a new precision guidance system, the Energy Department’s National Nuclear Security Administration ...

Isaac Newton changed the way we understand the Universe. Revered in his own lifetime, he discovered the laws of gravity and motion and invented calculus. He helped to shape our rational world view.

After hours: January 31 at 4:05:52 PM EST Loading Chart for GRVY ...