Nature.com Books in brief 2016-11-30T00:00:00.000000Z Barbara Kiser reviews five of the week's best science picks. Fix food metrics 2016-11-30T00:00:00.000000Z For sustainable, equitable nutrition we must count the true global costs and benefits of food production, urge Pavan Sukhdev, Peter May and Alexander Müller. A new global research agenda for food 2016-11-30T00:00:00.000000Z Lawrence Haddad, Corinna Hawkes and colleagues propose ten ways to shift the focus from feeding people to nourishing them. Climate change: Shifting niches spell trouble 2016-11-30T00:00:00.000000Z Plants and animals will probably be unable to respond to changes in environmental conditions fast enough to keep pace with climate change.Tereza Jezkova and John Wiens of the University of Arizona, Tucson, looked at 56 plant and animal species and documented shifts in their Seismology: Gravity changes before quake hits 2016-11-30T00:00:00.000000Z Researchers have for the first time detected temporary changes in Earth's gravitational field just before an earthquake.Jean-Paul Montagner at the CNRS Institute of Earth Physics in Paris and his team analysed gravimetric and seismic data recorded during the massive 2011 Tohoku earthquake in Japan. Cancer: 'Jet lag' increases mouse cancer risk 2016-11-30T00:00:00.000000Z Mice with simulated jet lag have an increased risk of developing liver cancer.Sleeping out of step with the day–night cycle has been linked to various health disorders in humans. David Moore, Loning Fu and their colleagues at Baylor College of Medicine in Houston, Texas, Catalysts: Silicon added to life's toolbox 2016-11-30T00:00:00.000000Z Molecules containing both carbon and silicon have become a standard part of synthetic chemistry, but life uses silicon only in inorganic compounds such as the shells of diatoms.Now, Frances Arnold and her collaborators at the California Institute of Technology in Pasadena have engineered bacteria Immunology: Macaque social status alters immunity 2016-11-30T00:00:00.000000Z Changing the social status of macaques also changes their immune systems.Low social status has been linked to multiple health problems in humans and other primates, some of which may not be linked to the accessibility of food and other resources.Jenny Tung of Duke Researchers serve up suggestions to reduce food waste 2016-11-30T00:00:00.000000Z A change in cultural and social factors — such as overcoming a distaste for doggy bags — will be required to shift people’s behaviour. Post-publication criticism is crucial, but should be constructive 2016-11-30T00:00:00.000000Z In an era of online discussion, debate must remain nuanced and courteous.