By Peter Weiss
Two independent teams of physicists have coaxed molecules into an extraordinary state of ultracold matter previously demonstrated only with atoms.
In each of the new experiments, the researchers created minuscule gas clouds with an amazing property. All of the constituent two-atom molecules meld to form a single supermolecule, says Deborah S. Jin of JILA, a joint institute of the National Institute of Standards and Technology and the University of Colorado, both in Boulder.