Free Republic

Mysterious MigrationsOur prehistoric ancestors journeyed out of Africa on contested roads Bruce Bower It was the most momentous immigration ever, a population realignment that marked a startling departure for our species, Homo sapiens. After emerging in eastern Africa close to 200,000 years ago, anatomically modern people stayed on one continent for roughly 140,000 years before spreading out in force around the world. Then, from 40,000 to 35,000 years ago, our forerunners advanced into areas stretching from what is now France to southeastern Asia and Australia. DIGGING THE PAST. Workers excavate deep into a site near the Russian village of Kostenki,...

The journal Nature had a piece May 18 that postulates the human-monkey lines split as recently as 5.4 million years ago. Previous research indicated the divergence occurred 9 million years ago. The new work by Harvard Medical School and the Massachusetts Institute of Technology suggests the full split wasn't achieved for nearly 4 million years and might have occurred twice. Interbreeding started the evolution of a hybrid species that led to the species of modern man, homo sapiens. We don't pretend to have the credentials of Harvard or MIT anthropologists, nor it is our intention to provoke an evolution-creation debate....

Free trade may have finished off Neanderthals 01 April 2005 NewScientist.com news service Celeste Biever Modern humans may have driven Neanderthals to extinction 30,000 years ago because Homo sapiens unlocked the secrets of free trade, say a group of US and Dutch economists. The theory could shed new light on the mysterious and sudden demise of the Neanderthals after over 260,000 years of healthy survival. Anthropologists have considered a wide range of factors which may explain Neanderthal extinction, including biological, environmental and cultural causes. For example, one major study concluded that Neanderthals were less able to deal with plunging temperatures...

NEW YORK (AP) -- A new analysis of bones unearthed nearly 40 years ago in Ethiopia has pushed the fossil record of modern humans back to nearly 200,000 years ago -- perhaps close to the dawn of the species. Researchers determined that the specimens are around 195,000 years old. Previously, the oldest known fossils of Homo sapiens were Ethiopian skulls dated to about 160,000 years ago. Genetic studies estimate that Homo sapiens arose about 200,000 years ago, so the new research brings the fossil record more in line with that, said John Fleagle of Stony Brook University in New York,...

Researchers working in Iceland said on Sunday they identified a genetic pattern that makes some Europeans more fertile. The genetic pattern, known as an inversion, is a stretch of the DNA code that runs backwards in people who carry it. Usually, such rearrangements of a chromosome are harmful to carriers. But this one causes carriers to have more children each generation -- giving them what is known as a selective advantage, the researchers reported. The finding, published in Monday's issue of the journal Nature Genetics, opens some interesting questions about human evolution, the team at Iceland's DeCODE Genetics said. "We...

Dale (l) and Chris Liuzza read to Seth before putting him to bed for the night -- a ritual they have shared since he was born. (Photo by Kathy Anderson)  Gay Dads, Bringing Up Baby BY BARRI BRONSTON NEW ORLEANS -- With $70 in gift cards to spend, Chris and Dale Liuzza zip through a suburban Babies 'R' Us, filling their shopping cart with everything from onesies and socks to diapers and wipes. It is February 2004, and a great adventure is just beginning. "I want to make sure we get the softest ones," Dale says, trying to decide...

Extinct humans left louse legacy By Paul Rincon BBC News Online science staff The evolutionary history of head lice is tied very closely to that of their hosts Some head lice infesting people today were probably spread to us thousands of years ago by an extinct species of early human, a genetics study reveals. It shows that when our ancestors left Africa after 100,000 years ago, they made direct contact with tribes of "archaic" peoples, probably in Asia. Lice could have jumped from them on to our ancestors during fights, sex, clothes-sharing or even cannibalism. Details of the research appear...

    Oldest human footprints found on volcano   19:00 12 March 03   NewScientist.com news service   The trails of footprints (A and B) have as many as 27 steps (Image: Paolo Mietto and Marco Avanzini)   Three primitive humans who scrambled down a volcano's slopes more than 325,000 years ago left their footprints fossilised in volcanic ash. If the ages of the trails are confirmed, they could be the earliest known footprints of our Homo ancestors. Paolo Mietto of Padua University and his colleagues examined three tracks of footprints on the Roccamonfina volcano in southern Italy, known to locals as...

In a laboratory in the upper recesses of the American Museum of Natural History, away from the public galleries, Dr. Ian Tattersall, a tall Homo sapiens, stooped and came face to face with a Neanderthal man, short and robust but bearing a family resemblance — until one looked especially closely. A paleoanthropologist who has studied and written about Neanderthals, Dr. Tattersall was getting his first look at a virtually complete skeleton from this famously extinct branch of the hominid family. Nothing quite like it has ever been assembled before, the foot bones connected to the ankle bones and everything else...