New York Times: “If people first became nudists 3.3 million years ago, when did they start to wear clothes? Surprisingly, lice once again furnish the answer. Though humans may long have worn loose garments like animal skin cloaks, the first tailored clothing would have been close-fitting enough to tempt the head louse to expand its territory. It evolved a new variety, the body louse, with claws adapted for clinging to fabric, not hairs. In 2003, Mark Stoneking, a geneticist at the Max Planck Institute in Leipzig, Germany, estimated from DNA differences that the body louse evolved from the head louse about 107,000 years ago. The first sewn clothes were presumably made shortly before this time.”

New Scientist: “Mixing antimatter and matter usually has predictably violent consequences – the two annihilate one another in a fierce burst of energy. But physicists in Geneva have found a new way to make the two combine, at least briefly, into a single substance. This exceptionally unstable stuff, made of protons and antiprotons, is called protonium.”

New Scientist: “A brain region that curbs our natural self interest has been identified. The studies could explain how we control fairness in our society, researchers say. Humans are the only animals to act spitefully or to mete out ‘justice’, dishing out punishment to people seen to be behaving unfairly – even if it is not in the punisher’s own best interests.”