Obama Makes the Right Call on Immigrant Children

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Stanford engineers find work around for barriers to carbon nanotube computers

We've been waiting, rather patiently we might add, for carbon nanotubes to really start making a difference in our computing lives. That day has yet to pass, but researchers at Stanford are making good progress. Breakthroughs have been coming at a steady pace over the last several years, but there are still major obstacles. For one, aligning tubes end to end has proven practically impossible, and metallic carbon nanotubes (as opposed to semi conducting ones) wreak all sorts of havoc with circuits. (That wouldn't be an issue if there was a reliable way to produce only the semiconducting variety.) Rather than charge headlong into those challenges though, the Stanford team has figured out a way around modern limitations, without sacrificing much of the energy efficiency that makes carbon nanotubes so attractive. The team has found an "imperfection-immune" way of designing nanotube circuits that removes metallic contaminants and is unaffected by misaligned tubes. For more info, check out the PR after the break.

Continue reading Stanford engineers find work around for barriers to carbon nanotube computers

Stanford engineers find work around for barriers to carbon nanotube computers originally appeared on Engadget on Sat, 16 Jun 2012 01:38:00 EDT. Please see our terms for use of feeds.

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GOP: Destroy Obamacare, then drag feet and do nothing (Americablog)

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Huawei M660 wields portrait keyboard, headed for Cricket Wireless?

After the familiar vertical keyboard structure of a BlackBerry, but with all the Google friendliness and app breadth of an Android phone? Then Huawei may have the answer -- and it looks like it'll land on the US carrier, Cricket. According to leaked photos sent to PhoneArena, the Huawei M660 is modestly equipped with Android 2.3 and a portrait QWERTY keyboard nestled below a 3.2-inch display. Its existence is backed up by a page on the manufacturer's site, pointing to a (now non-existent) user guide that references expandable microSD storage, the possibility that it may arrive as the Ascend Q, and name-drops Cricket in the process. For those with portrait keyboard needs, you can hit up the link below for a few more shots of the device.

Huawei M660 wields portrait keyboard, headed for Cricket Wireless? originally appeared on Engadget on Fri, 15 Jun 2012 11:27:00 EDT. Please see our terms for use of feeds.

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What was the Amazon like before Columbus?

Rhett A. Butler / mongabay.com

New evidence challenges the idea that the Amazon Basin was densely inhabited before the arrival of Europeans.

By Alan Boyle

The historical portrayal of the Amazon Basin's residents before 1492 has swung from the stereotype of backward savages to a vision of sophisticated stewards of the land ? but a newly reported survey suggests that wide swaths of the Amazon's forests, particularly in the western and central regions, were relatively untouched by humans.

The findings could play into the debate over the Amazon's future as well as its past.

""You can't use an idea of past transformed landscapes to justify modern deforestation,"?Crystal McMichael, a paleoecologist who analyzed Amazonian soil as part of her research at the Florida Institute of Technology, told me. McMichael is the lead author of a study published in today's issue of the journal Science.

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She and her colleagues collected 247 core samples of soil from 55 sites throughout the central and western Amazon, in Brazil and Peru, to check for signs of human disturbance. Their objective was to provide a reality check for what some researchers have called the "1491 hypothesis": the idea that areas of the Amazon Basin were intensely managed centuries ago, but reverted to a more natural state after the arrival of explorer Christopher Columbus and his European brethren, due to the decline of indigenous culture.

One of the foremost critics of that view is Dolores Piperno, a senior scientist at the Smithsonian Institution's National Museum of Natural History and the Smithsonian Tropical Research Institute. Piperno is a co-author of the Science paper.

"Drawing on questionable assumptions, some scholars argue that modern Amazonian biodiversity is more a result of widespread, intensive prehistoric human occupation of the forests than of natural evolutionary and ecological processes," she said in a Smithsonian news release. "Climatologists who accept the manufactured-landscapes idea may incorporate wholesale prehistoric Amazonian deforestation, widespread fires and carbon emissions into their models of what caused past shifts in atmospheric carbon dioxide and methane levels. But we need much more evidence from Amazonia before anything like that can be assumed."

The evidence from the soil samples, including samples taken from sites with previously known human impacts, runs counter to those assumptions. Most of the samples showed little sign of charcoal, which would have been left behind by land-clearing fires. There were few signs of silica deposits known as phytoliths, which are indicators of ancient agriculture. The researchers did pick up the signature of "terra preta" ? that is, earth enriched by human waste?? but mostly around riverbanks rather than far into the forest.

Crystal McMichael

Researchers Crystal McMichael and Monica Zimmerman collect soil samples in the tropical rainforests of Peru.

"Together, the data suggest that human population densities in the sampled regions were low and highly localized, and were not consistent with major population centers with associated areas of widespread, extensive agriculture," the researchers wrote.

The findings came as no surprise to Michael Heckenberger, an anthropologist at the University of Florida. Heckenberger is perhaps best-known for his study of ancient urban communities in the Upper Xingu region of the Brazilian Amazon, east of the areas surveyed by McMichael and her colleagues. His work was discussed in "The Lost City of Z," a best-selling book by David Grann.

"I was delighted to see the paper, because it does act as a cautionary note," Heckenberger told me.?

Heckenberger said the research fits in with the view that the pre-Columbian Amazon Basin had wide areas of forest land that showed relatively little human alteration, as well as areas that supported substantial concentrations of human population.

"This clearly has moved the debate forward," he said. "I hope we don't digress back to [a debate over whether] the Amazon was the setting par excellence for primordial forests and primitive tribes vs. an area that was dominated by large, complex societies. It's neither one nor the other. ... There were patches of dense, complex societies, and then there were other areas that were, if not completely untouched, then something very like untouched forest."

Heckenberger said he was "still of the opinion that as time progresses, we're going to find more and more of the Amazon that did support large populations." But he praised the work published in Science and said he hoped to see more sampling of sites from broader stretches of the Amazon Basin.

"I'd love to grab that team and bring them to my research site, to use that to some degree as a control against what you might expect," he told me. "The flip side of that is to jump into the pickup truck with that team and look for archaeological signatures in the area that they've been studying."

McMichael thought that was a fine idea. "He's done some excellent work," she said of Heckenberger.

She speculated that pre-Columbian tribes preferred to live near rivers rather than in the forest interior "so they could connect with other communities" more easily. She also suspected that the eastern side of the Amazon Basin was settled more intensely than the western side because it was drier and more amenable to forest-clearing. However, even if large settlements existed in some parts of the Amazon before Columbus, that shouldn't be used as a defense for 21st-century deforestation, McMichael said.

"The amazing biodiversity of the Amazon is not a byproduct of past human disturbance," she said in a news release. "We also can't assume that these forests will be resilient to disturbance, because many have never been disturbed, or have only been lightly disturbed in the past. Certainly there is no parallel in western Amazonia for the scale of modern disturbance that accompanies industrial agriculture, road construction, and the synergies of those disturbances with climate change."

More about Amazonian culture:

---

In addition to McMichael and Piperno, authors of "Sparse Pre-Columbian Human Habitation in Western Amazonia" include M.B. Bush, M.R. Silman, A.R. Zimmerman, M.F. Raczka and L.C. Lobato.

Alan Boyle is msnbc.com's science editor. Connect with the Cosmic Log community by "liking" the log's Facebook page, following @b0yle on Twitter and adding the?Cosmic Log page?to your Google+ presence. You can also check out?"The Case for Pluto,"?my book about the controversial dwarf planet and the search for new worlds.

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Video: Euro Zone Ready to Act in Wake of Greece Elections

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Bad Behavior And How it Threatens Internet Business

Patent disputes and bad behavior are among the threats to Internet business today. Our roundup looks at some of the ways patents can hurt startups and customers, some recommended solutions, and how bad behavior by entities large and small are threatening business growth online.

A Patent on Innovation

A step in the wrong direction. Imagine finding a product vital to your needs only to have a rival company bring a suit for patent infringement against its creators. Critics say patents aimed at protecting intellectual property can sometimes stifle growth and innovation when suits are used simply to push competitors out of the market or grab a piece of a startup?s success. TechDirt

Thoughts from a disgruntled customer. The story of four-year-old Maya, who cannot communicate with her parents except through a special app, puts a face on the way patent disputes over technology are affecting not only business growth but people. Here her mother recounts more details on how the technology had enhanced her life and how it feels to have it yanked away. Uncommon Sense

Fixing a hole. There have been a couple of suggestions posed recently about how to cut down on the number of innovation-hindering patent suits plaguing almost any Internet or other tech company that has been successful enough to make itself an attractive target. TechDirt

A better mousetrap. Professors Jason Schultz and Jennifer Urban from the University of California, Berkeley, School of Law, have put together more details about how open innovation communities might help address issues of intellectual property while avoiding the ?thickets? of software patents threatening innovation. Social Science Research Network

Spamming Social Media

They ought to know better. Spamming is not limited, it seems, to small-time operators running sites of low quality. Some big media types are practicing what social site Reddit considers spamming by using the social platform only to promote their own content and not to participate in the community. Big publications like The Atlantic and BusinessWeek have been temporarily banned for being spammy, malicious, or for engaging in what Reddit calls ?cheating.? The Verge

Social media vampires. ?An associate editor and social media editor at The Atlantic, may have attempted to game Reddit to siphon off readers for the Atlantic at what Reddit says is the expense of its larger online community. It?s important to understand how some communities view this activity to avoid having your own accounts and URLs similarly sanctioned. ?An engaging forsensic read. ?The Daily Dot

Are you a social media spammer? Well, you could be, especially on social sites like Reddit where the rules for participating in the? community are pretty strict. The best advice is to know your community?s rules and to avoid being one of those people who is using a social media site for just one thing, self promotion. Instead, try becoming part of the community and you may be surprised what you get in return. The Daily Dot

When social media spams back. Last week when LinkedIn sent out notifications to members about a problem with compromised passwords, about four percent, or a quarter of a million, were discarded as spam. The problem isn?t the content of the e-mails themselves, but that LinkedIn sends far too much e-mail to its users, according to the author of this article. ?Cloudmark

Land Grabs and Poor Policing

Who will own the Internet? Critics complain that major players like Google and Amazon are engaged in a land grab for new domains like .app, .shop, .book, .love, .kids, and .pizza, with so many applications filed that they will gain an unfair online advantage and be able to lock out competitors. Domain owners can control who gains a domain name and what they can do with it, potentially rewarding their best customers and denying access to others. The Guardian

Bad actors destroy business. Finnish social networking and virtual world creator Sulake has lost a key investor and garnered some very bad publicity over a scandal involving its Habbo game. An investigation reveals the company?s inability to control illicit content shared and hosted on its site that is clearly inappropriate for its 13 to 16 year old principal demographic. Inability to police and address problems like this can be very damaging to any online community. TechCrunch

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