(Image: Regis Duvignau/Reuters)
Tweeting rich
Tweets can be a sign of what鈥檚 in your wallet. Researchers at the University of Pennsylvania for differences between low and high-income users, using job titles disclosed in people鈥檚 profiles as a proxy for income. High earners tended to discuss news and politics, while those with lower incomes preferred to chat among themselves (PLOS One, ).
鈥淒on鈥檛 be evil鈥�
Google鈥檚 famous corporate guideline vanished from its code of conduct last week, as the company officially adopted its new name, Alphabet
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Strong like鈥� noodles
Building artificial muscle is hard, but Chinese researchers have found inspiration in a national dish 鈥� noodles. The key difficulty is persuading cells to develop into muscle tissue, as they only do this when subjected to a force that stretches and squeezes them. Yuhui Li at Xi鈥檃n Jiaotong University and colleagues by extruding hydrogel through a sieve, then coated these with muscle cells. They used magnetism to expand and contract the fibres, so inducing muscle formation (Advanced Functional Materials, ).
