Is gravity a force?

Is gravity a force? The answer to that simple question is remarkably complicated and depends crucially on the theoretical framework in which the question is asked and answered. In this video, Fermilab’s Dr. Don Lincoln takes on this surprisingly tricky question. Quantum gravity: https://www.youtube.com/watch?v=CbPWYjnQIO8 Loop quantum gravity: https://www.youtube.com/watch?v=QMpkFde3euA Superstrings: https://www.youtube.com/watch?v=CaQnC_UmxA4 Fermilab physics 101: https://www.fnal.gov/pub/science/particle-physics-101/index.html Fermilab home page: https://fnal.gov