By timothy from Slashdot's drive-by-juicing department
New submitter GoJays writes "An 18-year-old from Saratoga, California has won an international science fair for creating an energy storage device that can be fully juiced in 20 to 30 seconds. The fast-charging device is a so-called supercapacitor, a gizmo that can pack a lot of energy into a tiny space, charges quickly and holds its charge for a long time. What's more, it can last for 10,000 charge-recharge cycles, compared with 1,000 cycles for conventional rechargeable batteries, according to the inventor Eesha Khare."
This one in particular has been used so far only to power an LED, rather than a phone or laptop, but I hope in a few years near-instant charging of portable electronics will be the norm as supercapacitors grow more common.Read Replies (1)
By timothy from Slashdot's that's-a-lot-of-air-to-move department
Nerval's Lobster writes that a survey from the Uptime Institute "suggests something it calls 'green fatigue' is setting in when it comes to making data centers greener. 'Green fatigue' is exactly as it sounds: managers are getting tired of the increasingly difficult race to chop their PUE, or Power Usage Effectiveness. The PUE is a measure of a data center's efficiency. The lower the PUE, the better — and Microsoft and Google, with nearly limitless resources, have set the bar so high (or low, depending on your perspective) that it's making less-capitalized firms frustrated. Just a few years ago, the Uptime Institute estimated that the average PUE of a data center was around 2.4, which meant for every dollar of electricity to power a data center, $1.4 dollars were spent to cool it. That dropped to 1.8 recently, an improvement to be sure. But then you have companies such as Google and Microsoft building data centers next to rivers for cheap hydroelectric power in remote parts of the Pacific Northwest and reporting insanely low PUEs (below 1.1 in some cases). The Institute latest survey of data center operators shows only 50 percent of respondents in North America said they considered energy efficiency to be very important to their companies, down from 52 percent last year and 58 percent in 2011."Read Replies (0)
By timothy from Slashdot's so-you're-saying-people-might-like-this department
LeadSongDog writes "The Globe and Mail is reporting that the 'Pebble' smartwatch has matched the $15M record for Kickstarter funding after initially being panned by the VC crowd."
One advantage that the Pebble has over rumored watches from big names like Google and Apple
.Read Replies (0)
By timothy from Slashdot's but-ants-are-nice department
From an article at the Houston Chronicle (not The Onion) comes a report of concern to anyone in a warm climate with, well, electronics. From the article:"According to researchers at The University of Texas at Austin, invasive 'crazy ants' are slowly displacing fire ants in the southeastern United States. These 'Tawny Crazy Ants' have a peculiar predilection toward electronics as well.
'They nest in electronics and create short circuits, as they create a contact bridge between two points when they get electrocuted they release an alarm pheromone,' says UT research assistant Edward LeBrun.
'The other ants are attracted to the chemicals that other ants give off,' he adds. At this point, more ants arrive and create a larger nest."
The L.A. Times also has a report, which says "Thus far, the crazy ants are not falling for the traditional poisons used to eliminate fire ant mounds. And when local mounds are destroyed manually, they are quickly regenerated.
'They don't sting like fire ants do, but aside from that they are much bigger pests,' LeBrun said. 'There are videos on YouTube of people sweeping out dustpans full of these ants from their bathroom. You have to call pest control operators every three or four months just to keep the infestation under control. It's very expensive.'"Read Replies (0)
By timothy from Slashdot's series-of-tubes department
An anonymous reader writes "This being college graduation season, the insights provided by commencement speakers should be familiar by now: find work in a field you're passionate about, don't underestimate your own abilities, aim high, learn to communicate and collaborate with others, give something back to your community. Billionaire Mike Bloomberg, whose current job is Mayor of New York City, evidently decided to break the mold by advising less academically adept youngsters to consider a career in plumbing. High wages, constant demand, no offshore competition. 'Compare a plumber to going to Harvard College — being a plumber, actually for the average person, probably would be a better deal'. Ouch! And hey, like a lawyer, a plumber can always dabble in politics."Read Replies (0)