On the Multiple Deaths of Whitehead's Theory of Gravity
  Whitehead's 1922 theory of gravitation continues to attract the attention of philosophers, despite evidence presented in 1971 that it violates experiment. We demonstrate that the theory strongly fails five quite different experimental tests, and conclude that, notwithstanding its meritorious philosophical underpinnings, Whitehead's theory is truly dead. 
Gary Gibbons (DAMTP) and Clifford M. Will (Washington Univ. St. Louis)