Each line segment of a distance-time graph represents one part of a journey. A distance-time graph, sometimes referred to as a travel graph, is a way of representing a journey. It is helpful to have ...

Einstein’s equations look simple on paper but when physicists follow them to their logical end, the universe becomes far stranger than anyone expected. Black holes, warped space, time dilation, and ...

Sharline Spears, mother of 8-year-old actress Scarlett Spears, talks to Yahoo about what it takes to raise a child actress. (Photo illustration: Yahoo News; photo: Courtesy of Sharline Spears) ...