Nearly 1,000 years after the 1054 supernova, NASA's Hubble finds the Crab Nebula is still expanding, helping scientists study ...
If you could step into a time machine and travel 1,000 years into the future, would you even recognize humanity? Would we still look like we do today, or would evolution, technology, and survival ...
Layers of earthquake-twisted ground are seen at dusk where the 14 freeway crosses the San Andreas Fault on June 28, 2006 near Palmdale, California. David McNew/Getty Images Tectonic stress along ...