universityofgeorgia
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University of Georgia stops plant photosynthesis to generate solar power
There's a more efficient way to harvest energy from the backyard than by wiring up hapless critters. Researchers at the University of Georgia have proof: they've discovered a way to generate electricity from plants through hijacking the photosynthesis process. By altering the proteins inside a plant cell's thylakoids, which store solar energy, scientists can intercept electrons through a carbon nanotube backing that draws them away before they're used to make sugar. While the resulting power isn't phenomenal, it's still two orders of magnitude better than previous methods, according to the university. The protein modification method may have a rosier future, as well: the team believes that it could eventually compete with solar cells, producing green energy in a very literal sense.
Chemical sensors could detect plants' cries for help, reduce need for pesticides
It's a terrifying thought, but science suggests that when under attack, plants cry for help. Invisible and, often odorless, green leaf volatiles emitted from vegetation act as a defense mechanism, communicating to other foliage that danger is near. One researcher at the University of Georgia, however, is developing a chemical sensor to use these distraught emissions for good. Working in a similar fashion detecting glucose in the blood, the sensor would be able to alert farmers to when crops are under attack from pests, allowing them to trigger defenses reactively, and in a localized area. The net result being less chemicals on our food, and potentially lower costs for producers. Other suggested uses include helping us keep our produce at home fresher for longer by -- literally -- weeding out bad apples in a bag, before they affect the others. The technology is still being optimized for field use, but a testing device should follow once complete. In the meantime, we'll never feel the same about mowing the lawn again.
Shocker! The internet is not egalitarian, popular forum posters have it easy
Researchers at the University of Georgia analyzed six years' worth of Usenet posts, and you know what they discovered? Life ain't fair. The most popular two percent of posters who started discussion threads hogged 50 percent of all replies, while everyone else struggled for attention. What made some thread-starters more attractive than others? Thankfully it wasn't rampant flaming. The distinguishing trait was actually how factual they were: only 12 percent of posts by popular posters contained personal opinions or comments. However, posting a bit of news isn't all it takes to win followers. In a related experiment, 200 volunteers were unleashed onto "simulated" discussion forums and their behavior revealed an even more important factor. The slightly flummoxed researchers called it a "preferential attachment", which pulled readers towards posters who already had an excess of followers. In other words, life still ain't fair. For a delightfully factual breakdown of the full results, check out the PR after the break.
Screen Grabs: Newly minted Bengals wide receiver AJ Green rocks Dell Streak during NFL draft (video)
Screen Grabs chronicles the uses (and misuses) of real-world gadgets in today's movies and TV. Send in your sightings (with screen grab!) to screengrabs at engadget dot com. A tipster sent us video from ESPN's NFL draft coverage, asking us to identify the giant phone in University of Georgia wide receiver AJ Green's hand. Turns out it's a white Dell Streak, perhaps the only phone on the market capable of dwarfing the Cincinnati Bengals' fourth overall pick by comparison. Keep in mind, Green is a big guy -- he's 6 feet, 4 inches. He also catches footballs for a living, so we figure that, at the very least, he's got to have average hands for a man of his size. We're happy to report he didn't spike the phone after hearing the news. Videographic evidence after the break. [Thanks, Ramon]
Study finds people want more from their Kindles, less from their newspapers
This may come as a surprise to you (although probably not, you smart devil), but it turns out that plenty of people are dissatisfied with their current e-reader options -- according to a recent study conducted at the University of Georgia. The study was conducted over a six-month period where participants read the Atlanta Journal-Constitution on a Kindle, then provided feedback. The results were, well -- not entirely shocking. Younger adults found the Kindle to be lacking because it had no touchscreen or other applications (though to be fair, neither does the print version of the paper), while older adults seemed more satisfied, but also reported missing the crossword puzzles and comics of a real, live newspaper. Pretty much everyone agreed that the screen was nice and comfortable to read on, but almost no one was a fan of the price. All in all, there's not terribly much here that we think is overly telling -- besides (of course) the fact that paper rules.
