Bustling around their reef homes, Red Sea dascyllus damselfish (Dascyllus marginatus) do quite well out of their co-habiting arrangement with hood coral (Stylophora pistillata). ‘The coral provide the fish with shelter from predators and a place for social interactions and egg laying’, says Nur Garcia-Herrera, from the Alfred-Wegener-Institut, Germany. Yet the agreement isn’t entirely one sided...

On a warm Monday mornirg in Pocatello, Idaho, Mark Brown surveys the bustling activity in his cramped metal-fabrication shop. As owner and president of Premier Technology, Inc., Mark uses a few moments between cellular phone calls to reflect on the rapid growth of his small company and to consider a few alternatives regarding the future direction of the business. As the temperature and welding ...