Low Ranked Craig writes "Senior space agency scientists believe the Earth will be hit with unprecedented levels of magnetic energy from solar flares after the Sun wakes 'from a deep slumber' sometime around 2013. In a new warning, NASA said the super storm could hit like 'a bolt of lightning' and could cause catastrophic consequences for the world's health, emergency services, and national security — unless precautions are taken. Scientists believe damage could extend to everyday items such as home computers, iPods, and sat navs. 'We know it is coming but we don't know how bad it is going to be,' said Dr. Richard Fisher, the director of NASA's Heliophysics division. 'I believe we're on the threshold of a new era in which space weather can be as influential in our daily lives as ordinary terrestrial weather.' Fisher concludes. 'We take this very seriously indeed.'"

An anonymous reader tips a piece in Australian Geographic indicating that Pluto may be in for another demotion, as researchers work to define dwarf planets more exactly. "[Australian researchers] now argue that the radius which defines a dwarf planet should instead be from 200–300 km, depending on whether the object is made of ice or rock. They base their smaller radius on the limit at which objects naturally form a spherical rather than potato-like shape because of 'self-gravity.' Icy objects less than 200 km (or rocky objects less than 300 km) across are likely to be potato shapes, while objects larger than this are spherical. ... They call this limit the 'potato radius' ... [One researcher is quoted] 'I have no problem with there being hundreds of dwarf planets eventually.'"

Researchers from the School of Medicine at the University of California have shown that the more germs a child is exposed to, the better their immune system in later life. Their study found that keeping a child's skin too clean impaired the skin's ability to heal itself. From the article: "'These germs are actually good for us,' said Professor Richard Gallo, who led the research. Common bacterial species, known as staphylococci, which can cause inflammation when under the skin, are 'good bacteria' when on the surface, where they can reduce inflammation."