If the same base pairs are used to code for all organisms, why is there so much variation among organisms

The order of the codons differs between organisms. 

The different order of codons lead to different protein molecules being formed by the organisms which when expressed lead to different organisms trait

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.