In his introduction to a revolutionary theory of the cosmos, Martin Bojowald shows how the big bang theory may give way to the big bounce theory, which describe

The question of the existence and the properties of time has been subject to debate for thousands of years. This considered and complete study offers a contrast

Long ago, before the first humans, the dinosaur Littlefoot was born. Follow his journey as he searches for the Great Valley, where food and water are abundant a

Before she dies, Little Foot's mother tells the young dinosaur to go to to the Great Valley, where food is plentiful and he can start life anew.

Pterapunzel loves to sing, but a mean witch tries to keep her from sharing her songs! From Epic! Originals, Once Before Time is a playful board book series of f