The Grand Canyon exposes layer after layer of sedimentary rock stacked one atop the other like vast, multicolored pancakes in the earth. Other cliff...

Since distant galaxies are billions of light-years away, some understandably assume that distant starlight must have taken billions of years to reach...

In church, a friend asked me about the movie Jurassic World. Its high-tech presentation makes the idea of scientists resurrecting dinosaurs from DNA...