Rensselaer Semi-Weekly Republican, Volume 38, Number 83, Rensselaer, Jasper County, 13 July 1906 — The Earth a Self-Heater. [ARTICLE]

The Earth a Self-Heater.

Prof. Charles Thwing announce*, as a To*nit of his researches at -die Western Pe-j-rve. university, tluic rhe rothmOn metals and rock* of which the earth is constituted -haye the internal temperature due to radio-activity." He estimates that the heat thus constantly generated will maintain th* earth at its present temperature for many millions of, years..and he conclndes UMf At ÜBilt H pan Of lb# BUU“W heat is due to the same principle within itself.