By Will Dunham WASHINGTON (Reuters) - Everyone's body is brimming with bacteria, and these microbes do plenty of good things like building the immune system and helping digestion. A study published on Friday looking at the gut, mouth and skin microbes in people from a small, isolated tribe in southern Venezuela's Amazonian jungles shows just how much modern life may be altering humankind's bodily bacteria. The Yanomami villagers, secluded from the outside world until 2009, possessed the most diverse collection of bacteria ever found in people including some never before detected in humans, said scientists whose research appears in the journal Science Advances. The researchers were surprised to learn the Yanomami's microbes harbored antibiotic-resistant genes including those conferring resistance to manmade antibiotics, considering they never had exposure to commercial antibiotics.
By Elly Park New York, NEW YORK - Scientists at Columbia University in New York have successfully built a camera that is capable of producing images using power harvested from the surrounding incident light. The prototype self-powering camera takes an image each second, and in a well-lit scene it can operate indefinitely. The team is led by Shree Nayar, Professor of Computer Science at Columbia Engineering, "What we have designed here is an image sensor with pixels, with this new design that can not only capture pictures but also generate power from the pixels, in order to capture the images themselves. In modern cameras photo diodes, tiny devices inside each pixels of the image sensor, measure the amount of light that falls onto it, and Nayar said he noticed that the process is similar to photo diodes used inside solar panels to harvest energy. "It turns out exactly the photo diode is also used in solar cells which are used in solar panels to harvest energy from light, except that they are being used in a slightly different circuit.
By Andrea Shalal COLORADO SPRINGS, Colo. (Reuters) - The United States needs disruptive new technologies, new ways of acquiring equipment and bandwidth, and closer ties with global allies to stay ahead of growing challenges in space from China, Russia and others, the head of U.S. Air Force Space Command told Reuters. General John Hyten said the United States had been bracing for threats to its satellite systems for years, but continued anti-satellite testing by potential foes had fueled a fresh sense of urgency in both industry and government about the need to prepare to win a possible war in space.
By Jim Drury Texas, Houston, U.S. - Driving NASA's Modular Robotic Vehicle (MRV) looks out of this world - and the leading space agency say this might one day be a possibility. Developed at NASA's Johnson Space Center in Houston, Texas it's a fully electric vehicle which the agency say is well-suited for busy urban environments. Turns of the steering wheel are recorded by sensors and sent to computers at the vehicle's rear where they are interpreted immediately, instructing motors in one or all of its four wheels to turn as commanded. A force feedback system in the steering wheel means the driver will feel the same resistance and sensations as a car.
A pioneering stem cell treatment for patients disabled by stroke has continued to show long-term promise in a clinical trial, the British biotech company behind the project said on Friday. News that two-year follow-up data from a small Phase I study showed improvements in limb function with no worrying safety issues lifted shares in ReNeuron 10 percent by 0830 EDT. The clinical results were presented at the European Stroke Organisation Conference in Glasgow. The procedure involves injecting ReNeuron's neural stem cells into patients' brains to repair areas damaged by stroke, thereby improving both mental and physical function.