Equilibrium uid con gurations for close binary systems can become globally unstable. Instabilities arise from the strong tidal interaction between the two components, which tends to make the e ective two-body potential governing the orbital motion steeper than 1=r. As a result, a circular orbit can become unstable to small radial perturbations. The instability can be either secular or dynamical...

JCB • VOLUME 214 • NUMBER 3 • 2016 234 At the age of seven, Frederic Bard’s father taught him about the atomic composition of water molecules. Bard was fl abbergasted to learn that water is not simply “made of water.” He became fascinated by the idea that deeper truths about the world were waiting to be discovered, and in middle school he fell in love with biology. Noticing his interest in clas...

by Veronika Navrkalova, Emma Young, Panagiotis Baliakas, Lenka Radova, Lesley-Ann Sutton, Karla Plevova, Larry Mansouri, Viktor Ljungström, Stavroula Ntoufa, Zadie Davies, Gunnar Juliusson, Karin E. Smedby, Chrysoula Belessi, Panagiotis Panagiotidis, Tasoula Touloumenidou, Frederic Davi, Anton W. Langerak, Paolo Ghia, Jonathan C. Strefford, David Oscier, Jiri Mayer, Kostas Stamatopoulos, Sarka ...