Solid or Liquid? Physicists Redefine States of Matter
Glass and other strange materials have long confounded textbook definitions of what it means to be solid. Now, two groups of physicists propose a new solution to the riddle.
Hunger Game: Is Honesty Between Animals Always the Best Policy?
Game theorists have developed a new model of communication among animals. It suggests evolution will produce a situation in which members of a species are honest most of the time, but not always.