Masters of the universe What is the purpose of existence? Is there an afterlife? Is there anyone else out there? It's not every day we confront the big questions about life, the universe and everything. But, seizing on our increased interest in this search for meaning, three of our finest thinkers - scientist Richard Dawkins, cosmologist Paul Davies and playwright Michael Frayn - are getting to grips with these existential dilemmas in their new books. in Science > Simulationwith philosophysimulationuniverse