Science Versus Religion

Q: Why can't science be combined with religion?

A: 'Cause science creates skyscrapers and planes, while religion combines them.

Explanation

The joke plays on the idea that while science and religion are often seen as separate, sometimes even conflicting forces, there are cases where they intersect, such as the events of 9/11, where buildings and planes were combined. It's dark humor, using a tragic event for a twisted punchline.