Add Yahoo as a preferred source to see more of our stories on Google. NFL's chief medical officer 'not familiar with anything' that supports debunked substation conspiracy theory about 49ers' injuries ...

As the world watches and waits to see if North Korea will continue in its bid to launch a long-range rocket despite international warnings, a new video animation reveals just how the space test could ...

A pair of NASA spacecraft know as the Escape and Plasma Acceleration and Dynamics Explorers (ESCAPADE) to be launched to Mars by a Blue Origin New Glenn rocket. ESCAPADE will study how the "solar wind ...