New Scientist: The increasing number of icebergs breaking off Antarctica may have an unexpected benefit. According to one team of scientists, the bergs could feed carbon-loving plankton. If they are right, melting icebergs could – theoretically – slow global warming. Just how great an effect this would have remains to be seen. Rob Raiswell of the University of Leeds, UK and colleagues trained high-resolution microscopes on ice sampled from icebergs in the Southern Ocean and the Antarctic glaciers …