Judging from the number of published books and articles on the subject, there is a lot going on in the field of evolutionary cosmogony as astronomers and...
Signs are objects, actions, or marks standing for things besides themselves as in figure 1. Signs in ordinary experience are (1) sensory, (2) motoric,...
For more than three decades potassium-argon (K-Ar) and argon-argon (Ar-Ar) dating of rocks has been crucial in underpinning the billions of years for...