The international definition of a second of time could be heading for a change, thanks to researchers who have demonstrated that an advanced type of ‘atomic clock’ has the degree of precision and stability needed to provide a new standard. www.nature.com/...
Nature Outlook Obesity: Rates of obesity continue to rise worldwide. About 65% of Americans are either overweight or obese, resulting in 300,000 excess deaths per year. Yet surprisingly little is known about the science which underpins this global epidemic. Why do some people seem predisposed to weight gain? And how does appetite actually work? Devising an effective strategy to combat obesity will require the integration of insights from neuroscience, genetics and the behavioural sciences.
Nature, Volume 497 Number 7447. Genetically modified crops, we were promised, would deliver a second green revolution. In this special issue, Nature charts the development of GMO technology in the past three decades and looks for the green shoots that might form the basis of the next generation of GMOs. Cover: Kelly Krause/Nature (photo: Nagy-Bagoly Arpad/Shutterstock) Nature Publishing Group