The genome of the Anzick child, who died 12,600 years ago at the age of three and was buried with ceremony in the American Rockies, has been fully sequenced. The results shed an incredible light on the history of the peopling of the Americas: his people seem to have been direct ancestors to most tribes of Central and South America, and close relatives of the Canadian tribes. The discoveries have had an emotional impact on Native Americans, and the boy's remains will be reburied with great respect. Still, tribal belonging is about much more than genetics, as anthropologist Kim Tallbear reminds us. You can see replicas of the heirloom artefacts left in the boy's grave here, or visit the collection at the Montana Historical Society if you're in the area.
"During the most recent ice age, milk was essentially a toxin to adults because — unlike children — they could not produce the lactase enzyme required to break down lactose, the main sugar in milk. But as farming started to replace hunting and gathering in the Middle East around 11,000 years ago, cattle herders learned how to reduce lactose in dairy products to tolerable levels by fermenting milk to make cheese or yogurt. Several thousand years later, a genetic mutation spread through Europe that gave people the ability to produce lactase — and drink milk — throughout their lives. That adaptation opened up a rich new source of nutrition that could have sustained communities when harvests failed." - The Milk Revolution - how a single mutation expanded (some) of humanity's diet. (Nature.com)
Tibetans May Be Fastest Evolutionary Adapters Ever. "A group of scientists in China, Denmark and the U.S. recently documented the fastest genetic change observed in humans. According to their findings, Tibetan adaption to high altitude might have taken just 3,000 years. That's a flash, in terms of evolutionary time, but it's one that's in dispute."
There are some unique finds that tell us about the early lives of people. But of course there are other ways...
We may soon be able to clone Neanderthals. But should we? An essay from Archaeology Magazine examines the ethical, scientific and legal ramifications. (Via Heather Pringle's Time Machine blog, where essay author Zach Zorich posted a reply and elicited a response.) [more inside]
The Etruscan civilization flourished in central Italy around the 6th century BC before the rise of the Roman Empire. Known for high art and high living, some say the Etruscans were influential in molding Roman and western civilization, however it has always been an enigma on where the Etruscans originally came from. DNA evidence has probably solved the mystery, confirming what Greek historian Herodotus first said over 2,500 years ago.