Geophysicist Frank D. Stacey and his colleagues from the University of Queensland, Brisbane, Australia, are attempting to test the laws of gravity. Physics and physical science laboratories have made numerous attempts in recent years to look for deviations in G, the gravitational constant, for the purpose of supporting non-Newtonian theories. Physicists would like to include G, and gravity fields (and waves), in a unified theory, but the results of the laboratory experiments with mass attraction have been more or less noncommital. Now for the first time in many decades the problem is back in the hands of geophysicists—where it originated.