Hypersonic: The Warp Speed of Today

The X-51A Waverider is an unmanned scramjet-powered demonstration aircraft, capable of achieving hypersonic speeds five times the speed of sound. At that speed an aircraft could travel across the U.S. in under an hour.

Breakingviews: Gold’s September warning (5:49)

Aug. 7 - Gold’s price slide may warn of an anxious September ahead, says Reuters Breakingviews.

FACTBOX: Asia's casino ambitions (2:07)

Aug. 7 - As Asia's casino operators gear up to report earnings, we break down some of the numbers on the plans, successes and failures of the region's burgeoning gaming industry