ORONO, Maine, Dec. 29 (TNSres) -- The University of Maine issued the following news release: Researchers from the University of Maine and Penn State discovered that molecules experience non-reciprocal interactions without external forces. Fundamental forces such as gravity and electromagnetism are reciprocal, where two objects are attracted to each other or are repelled by each other. In our everyday experience, however, interactions don't seem to follow this reciprocal law. For example, a pre more PR