Day-age creationism is an effort to reconcile the literal Genesis account of creation with modern scientific theories on the age of the universe, the Earth, life, and humans. It holds that the six days referred to in the Genesis account of creation are not ordinary 24-hour days, but rather are much longer periods (of thousands or millions of years). The Genesis account is then interpreted as an account of the process of cosmic evolution, providing a broad base on which any number of theories and interpretations are built.