The Big Bang was a huge explosion of energy. Some of it condensed into matter. That set the universe in motion. It led to...
Science today depends on the same five steps of observation, self consistency, universality, reproducibility, and debate as it did 500 years ago. But how...
Archeology shows us that 50,000 years ago our ancestors had invented art, religion, music, and all the other patterns of behavior we have today. ...