The researchers cautioned that interbreeding between modern humans and other lineages of humans might influence the results of this new study. For example, instances of interbreeding with the now-extinct Denisovan lineage might have introduced ancient genes into certain modern human groups, perhaps making them look as if they left Africa earlier than they actually did.
"Our study did not specifically test for hybridization with archaic humans, and, of course, it is possible that such admixture could contribute to our results," Harvati said. "We feel, however, that the very low levels of admixture that have been proposed are not sufficient to drive our findings."
The researchers said continued fieldwork and genetic advancements might help confirm this model of multiple, relatively isolated waves of migration.
"The story of human evolution tends to be simplified," Harvati said. "However, more complex models, such as multiple dispersals versus a single dispersal out of Africa, gain strength as more data and new methods become available."
In the case of that view in Onagawa — according to Google director of engineering Luc Vincent, the guy behind the Street View project — you can actually see, because the GPS coordinates are locked, that the ground shifted three meters in the earthquake. It’s pretty insane.
“It’s a 3-D mirror of the world,” Vincent said of Street View. “Now with this, we’re finally adding the fourth dimension, time.”
Archive Street View will be available in 55 countries
Hugh Herr heads MIT Media Lab’s Biomechatronics research group. He gave an inspiring speech at TED in March about his work developing advanced prosthetics and exoskeletons. Watch the whole speech below and learn about the future of bionic humans and cyborgs.
My gods. These are amazing. For those who have lost limbs or been born without, these are an AMAZING advancement.
… I do however have a qualm with their website saying “towards an end to disability”, because - while these are amazing, they don’t address disabilities other than loss of limb or use of limb. Even something like EDS wouldn’t really benefit from this… To say nothing of something like my narcolepsy.
What strixus said.
Other than that, I am a happy thing, right here and now.
Their words were combined with social activity trawled from the #ontheflymilan hashtag, including Instagram pictures and Tweets, which were put together by the algorithmic publishing machine into a PDF, printed and bound, and handed out for free to visitors at Palazzo Clerici.
A state investigation of five small tremors last month in the Youngstown area, in the Appalachian foothills, found the injection of sand and water that accompanies hydraulic fracturing, or fracking, in the Utica Shale may have increased pressure on a small, unknown fault, State Oil & Gas Chief Rick Simmers told the Associated Press. He called the link “probable.”
The Internet retailer would jump into a crowded market dominated by Apple Inc and Samsung Electronics Co Ltd.
The company has recently been demonstrating versions of the handset to developers in San Francisco and Seattle. It intends to announce the device in June and ship to stores around the end of September, the newspaper cited the unidentified sources as saying.
Amazon has made great strides into the hardware arena as it seeks to boost sales of digital content and puts its online store in front of more users. Amazon recently launched its $99 Fire TV video-streaming box and its Kindle e-readers and Fire tablets already command respectable U.S. market share after just a few years on the market.
Duke University professor Miguel Nicolelis is leading a large, multi-university and multi-nation research project to build a walking suit for paraplegic people. Nicolelis insists the technology enables human movements, instead of stiff, robotic ones.
"All of the innovations we’re putting together for this exoskeleton have in mind the goal of transforming it into something that can be used by patients who suffer from a variety of diseases and injuries that cause paralysis," Nicolelis told The Guardian.
Nicolelis is training nine Brazilian paraplegic people, from ages 20 to 40, to use the exoskeleton. Three will attend the opening ceremony, and one will demonstrate how he or she can walk on the field.