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.

A provocative new study looks at the influential 2004 paper that introduced the concept of climate "wedges"—and the sobering question of what it may take to stabilize and then phase-out emissions of global warming gases.