Dr. Doug Owsley is a senior scientist at the Smithsonian Institute. He says Kennewick man is very important in establishing which theory of the peopling of North and South America is correct. But Natives want to see Kennewick man reburied. Marla Bigboy is the former lawyer for one of the tribes claiming Kennewick man. Victoria B.C. He explains the details of the controversy.
Some molecules come in both right and left handed forms.
And sometimes the forms can act in very different ways. Dr. David Lewis , a research microbiologist at the University of Georgia, has been studying pollutants. He's found that we don't really know which form of the molecules survive in the environment. And he thinks many pollutants may be more toxic than we know, or less toxic than we think.