Bad_CRC1945 writes "The good news: Not one, but two companies are selling jet packs. The bad news: The tech has a long way to go. In the past, potential buyers have been stymied by two problems: Rocket belts aren't for sale, and even prototypes run on modern-day fuel (as opposed to whatever the Jetsons use) which means rocket belts can weigh upwards of 100 pounds, with only enough fuel to stay aloft for under a minute." That second problem's still with us, but the article hints that jet-fuel options (for the brave) could considerably extend users' time aloft.

theodp writes "Ted Dziuba can't wait for NoSQL to die. Developing your app for Google-sized scale, says Dziuba, is a waste of your time. Not to mention there is no way you will get it right. The sooner your company admits this, the sooner you can get down to some real work. If real businesses like Walmart can track all of their data in SQL databases that scale just fine, Dziuba argues, surely your company can, too."

University of Utah physicist Tim Garrett has published a study that approaches the economy and its relation to global warming as a physics problem — and comes to some controversial conclusions: that rising carbon dioxide emissions cannot be stabilized unless the world's economy collapses or society builds the equivalent of one new nuclear power plant each day. The study was panned by economists and was rejected by several journals before its acceptance in the journal Climatic Change. "[Garrett discovered that] Throughout history, a simple physical constant... links global energy use to the world's accumulated economic productivity, adjusted for inflation. So it isn't necessary to consider population growth and standard of living in predicting society's future energy consumption and resulting carbon dioxide emissions. ... 'I'm not an economist, and I am approaching the economy as a physics problem,' Garrett says. 'I end up with a global economic growth model different than they have.' Garrett treats civilization like a 'heat engine' that 'consumes energy and does "work" in the form of economic production, which then spurs it to consume more energy,' he says. That constant is 9.7 (plus or minus 0.3) milliwatts per inflation-adjusted 1990 dollar. So if you look at economic and energy production at any specific time in history, 'each inflation-adjusted 1990 dollar would be supported by 9.7 milliwatts of primary energy consumption,' Garrett says. ... Perhaps the most provocative implication of Garrett's theory is that conserving energy doesn't reduce energy use, but spurs economic growth and more energy use."

Science News has a fascinating look at an under-appreciated corner of the career of Florence Nightingale — as an innovator in the use of statistical graphics to argue for social change. Nightingale returned from the Crimean War a heroine in the eyes of the British citizenry, for the soldiers' lives she had saved. But she came to appreciate that the way to save far more lives was to reform attitudes in the military about sanitation. Under the tutelage of William Farr, who had just invented the field of medical statistics, she compiled overwhelming evidence (in the form of an 830-page report) of the need for change. "As impressive as her statistics were, Nightingale worried that Queen Victoria's eyes would glaze over as she scanned the tables. So Nightingale devised clever ways of presenting the information in charts. Statistics had been presented using graphics only a few times previously, and perhaps never to persuade people of the need for social change."