Climate changes and loss of biodiversity in Yellow Stone National Park are the result of *
Ecological Footprint
Global Warming
Carrying Capacity
Ozone Layer

1.989×10^30 kg is the weight of the sun.

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.