No planet is more earth-like than Earth itself, so if life really does pop up readily in earth-like conditions, then surely it should have arisen many times right here on our home planet? And how do we know it didn't? The truth is, nobody has looked.
“If we're going to run for points we need to run in the top-five every week.”
“Some people carry their heart in their head and some carry their head in their heart. The trick is to keep them apart yet working together.”