As far as we know, humans have always been religious.Why?

Can science explain religion, and if so, what would that mean for religion itself?

Might the science show that religious beliefs are true, false, or unreasonable? Or might a scientific explanation of religion demonstrate how certain religious practices are rational or irrational?

The Explaining Religion Project is an 18-month investigation of the challenges and opportunities raised by an interdisciplinary investigation into the nature, success, and philosophical implications of scientific explanations of religion.