They lived for 150 million years but, as big a force as pterosaurs were in the history of life, they have largely remained a mystery to scientists. Now, with the help of engineering and special effects, rediscover these giant flying reptiles and their dominance of the sky. Journey back in time as National Geographic recreates the prehistoric world of these winged giants through animation and cutting-edge CGI for a glimpse into the life and death of these fascinating creatures. (44 min)

Segment 1 (11:45 min)