1995, web education program released by The Voyager Company
Gould's most significant contribution to evolutionary biology was the theory of punctuated equilibrium, which he developed with Niles Eldredge in 1972. The theory proposes that most evolution is characterized by long periods of evolutionary stability, which is infrequently punctuated by swift periods of branching evolution.
This is one part of movie files extracted from edutainment software First Person: Stephen Jay Gould on Evolution (1995). This particular title features a 5-part lecture by the late Harvard evolutionary biologist Stephen Jay Gould, as well as some of his related essays and Charles Darwin's book The Origin of Species.