How does coal create a negative impact to the environment?

Coal creates a negative impact on the environment because it contains sulfur and other harmful elements. When you burn coal these elements are then released into the air. And it can cause air pollution and health dangers as it releases a lot of carbon dioxide. 

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.