[Sam Cree]

"When did Native Americans first arrive on the North American continent, and where did they settle?"

A little unintentional irony here, referring to them as Native Americans in the same sentence that posulates their arrival from somewhere else.

Interesting article nonetheless, and even more interesting comments so far.

[Young Werther]

The genome studies using mitochondrial DNA from umblical cords has been analyzed and geneological studies have shown that a common ancestor Great Great Grandma to the nth power or about 200,000 bc lived in Ethiopia or North East Africa.

That means that we're all African by descent!

In the final analysis we're all human by race and all else is just environmental modification. Peruvian Indians have well developed lungs for living at high altitudes. Negros are named for their skin adaptation and yellow, white and other adaptations have everyting to do with our planet's multiplicative environment!

[Jedi Master Pikachu]

Native American shouldn't be used (all American natives are native Americans), but they definitely aren't Indians, either (or inhabitants of the river Sindhu region).

Linguists should construct a hypothetical parent language for the dominant language family in the Americas, and use the word for people in that language for Amerindians. Then it would have to be popularized, of course.