From Earth, a look at five outstanding questions in earth science. If scientists expect to cure cancer they need to take bigger risks, says biochemist Brent Stockwell. A review of Roald Hoffmann on the Philosophy, Art, and Science of Chemistry. A look at the single theory that could explain emergence, organisation and the origin of life. Lindsay Abrams on science's stilted calibration of human sexuality. The survival of the fittists: Understanding the role of replication in research is crucial for the interpretation of scientific advances. The humanities aren’t a science — stop treating them like one. F=ma: Prosperity isn’t how much you move — it’s how you move it. An excerpt from A Cultural History of Physics by Karoly Simonyi. Dusting off God: A new science of religionsays God has gotten a bad rap. Confessions of a fake scientist: Phil Edwards on what he learned about real science by making fun of it. Areview of The Rocks Don't Lie: A Geologist Investigates Noah's Flood by David Montgomery (and more). Science, such a sweet mystery: It's notwhat science knows, but what it doesn't, that really matters. Laura Kiniry on 8 labs and science relics worth a visit.