The living cell is the most complex system of its size known to mankind. Its host of specialized molecules, many found nowhere else but within living material, are themselves already enormously complex. They execute a...

Until now, I’ve been writing about “now” as if it were literally an instant of time, but of course human faculties are not infinitely precise. It is simplistic to suppose that physical events and mental...

Many investigators feel uneasy stating in public that the origin of life is a mystery, even though behind closed doors they admit they are baffled.

Perhaps there are many “nows” of varying duration, depending on just what it is we are doing. We must face up to the fact that, at least in the case of humans, the subject experiencing...