New Scientist has an update on the so-called "gigantic jets" first discovered in 2003 — these are lightning bolts that reach from cloud tops upward into the ionosphere, as high as 90 kilometers. (There's a video at the link.) What's new is that researchers from Duke University have managed to measure the electrical discharge from a gigantic jet and confirm that they carry as much energy skyward as ordinary lightning strikes carry to the ground. According to the article, "Gigantic jets are one of a host of new atmospheric phenomena discovered in recent years. Other examples are sprites and blue jets."

Hugh Pickens writes "Live Science reports that although life expectancy in the United States has risen to an all-time high of 77.9 years in 2007 up from 77.7 in 2006, gains in life expectancy may be pretty much over, as some groups — particularly people in rural locations are already stagnating or slipping in contrast to all other industrialized nations. Hardest hit are regions in the Deep South, along the Mississippi River, in Appalachia and also the southern part of the Midwest reaching into Texas. The culprits — largely preventable with better diet and access to medical services — are diabetes, cancers and heart disease caused by smoking, high blood pressure and obesity. What the new analysis reveals is the reality of two Americas, one on par with most of Europe and parts of Asia, and another no different than a third-world nation with the United States placing 41st on the 2008 CIA World Factbook list, behind Bosnia but still edging out Albania. 'Beginning in the early 1980s and continuing through 1999 those who were already disadvantaged did not benefit from the gains in life expectancy experienced by the advantaged, and some became even worse off,' says a report published in PLoS Medicine by a team led by Harvard's Majid Ezzati, adding that 'study results are troubling because an oft-stated aim of the US health system is the improvement of the health of "all people, and especially those at greater risk of health disparities.'"

Peter writes "Toyota researchers have unveiled a new humanoid robot that can run at 7 km/h, which is faster than Honda's humanoid robot ASIMO. Toyota's robot can also keep itself balanced when pushed, as shown in the video."