No. 72: Nov-Dec 1990
"A Soviet astrophysicist has made the startling claim that the Earth and other astronomical bodies may be riddled with mini black holes -- objects smaller than atoms but with masses which, in some cases, might be as great as a planet. Such objects, he claims, could account for volcanic hot spots, gravitational anomalies, concentrations of mass on the Moon (mascons), the existence of the rings of Saturn, and even the observations that gave rise to the notion of a 'fifth force.'"
J. Gribbin, whose article begins with the above paragraph, is quick to proclaim that this "theory of everything" is not just silly-season kite flying. Rather, it was proposed by A.P. Trofimenko in the well-respected Astrophysics and Space Science (168:277)
Restricting ourselves to speculations concerning the earth, Trofimenko sees our planet as a sphere of low-density material enclosing 126 mini black holes that account, first, for the many gravity anomalies we measure on the surface; and, second, the earth's high density. That's right, there's no iron core in this model! Some of the mini black holes near the surface create local hot spots (plumes, volcanos, etc.) through the emission of Hawking radiation. Trofimen-ko's scheme encompasses the planets, the stars, and, as advertised, "every thing." (Gribbin, John; "Could Mini Black Holes Provide a 'Theory of Everything?'" New Scientist, p. 25, September 1, 1990.)