Secrets of the Penguins cinematographer, Bertie Gregory, shares the memorable moment he filmed baby penguins leaping from a 50-foot cliff with PEOPLE.

For "Earth Day", the National Geographic documentary series "The Secret World of Penguins", produced by Oscar winner James ...

The amazing thing about filming penguins in the wild, "Secrets of the Penguins" cinematographer Bertie Gregory tells Variety, ...