image: Field voles (Microtus agrestis). This image relates to a paper that appeared in 5 April, 2013, issue of Science, published by AAAS. The paper, by Thomas Cornulier at the University of Aberdeen in Aberdeen, UK, and colleagues was titled, "Europe-Wide Dampening of Population Cycles in Keystone Herbivores." view more
Credit: [Photo © Metla/Erkki Oksanen]