If atheism is true, then where did the universe come from? Something can't come from nothing!Sound familiar? If you've ever argued religion with a theist - particularly online - chance are are you've heard something like this before.
Typically, my response has been to dismiss the claim as an argument from ignorance: Just another example of the old and easily dismissed claim that since we don't know how X happened, God must have done it. This dismissal is sufficient and justified - but unfortunately it is unsatisfactory in the mind of the theists that like to raise it.
However, it turns out we have an answer. Lawrence Krauss spends an hour discussing contemporary cosmology. Eventually, he considers the question: Why is there something rather than nothing? His answer:
There had to be. If you have nothing in quantum physics, you'll always get something. It's that simple. It doesn't convince any of those people - but it's true.Give it a go. I promise that it's one of the best uses you'll ever find for spending a free hour of your time - you can't have sex and eat icecream all day.