We have long been told a simple story about reward: Dopamine is the "wanting" molecule that drives us toward goals, and ...

Researchers at the University of Michigan have discovered that the constant gnawing of rodents isn't just a reflex or a consequence of a tough diet. It also triggers a release of dopamine in the brain ...

Researchers at Harvard’s Wyss Institute and Tufts University have engineered frog-cell constructs that autonomously assemble ...