In science news around the world this week, 74 Chinese cities began measuring concentrations of harmful particulate matter, a Chinese government regulation toughening penalties for academic fraud took effect, the company that owned the Deepwater Horizon agreed to pay $1.4 billion, the U.S. Supreme Court has rejected a case challenging government-funded research on human embryonic stem cells, and more.

Researchers discovered that though the pale wrinkles that adorn fingertips after an extended soaking may be unsightly, they help us get a stronger grip on slippery objects. In other news, a close look at fossils of a group of bipedal dinosaurs suggests that many of them shook their muscular, feather-adorned tails to gain attention during courtship. And this week's ScienceLIVE will look at some provocative new insights into tackling global warming, while this week's by the numbers features carbon dioxide emissions of the world's telecommunications infrastructure and the planets in the Milky Way galaxy.