As a chemist, the most fascinating issue for me revolves around the origin of life. Before life began, there was no biology, only chemistry — and chemistry is the same for all time. What works (or not) today, worked (or not) back in the beginning. So, our ideas about what happened on Earth prior to the emergence of life are eminently testable in the lab. And what we have seen thus far when the reactions are left unguided as they would be in the natural world is not much. Indeed, the decomposition reactions and competing reactions out distance the synthetic reactions by far. It is only when an intelligent agent (such as a scientist or graduate student) intervenes and “tweaks” Read More ›