TeV scale gravity, mirror universe, and ... dinosaurs

Abstract

This is somewhat extended version of the talk given at the Gran Sasso Summer Institute: Massive Neutrinos in Physics and Astrophysics. It describes general ideas about mirror world, extra spatial dimensions and dinosaur extinction. Some suggestions are made how these seemingly different things can be related to each other.

Comments: 36 pages, 6 figures, presented at the Gran Sasso Summer Institute: Massive Neutrinos in Physics and Astrophysics, 13-24 September, 1999. New references added and some misprints corrected. To be published in Acta Phys. Polonica