do certain things (what), at certain times (when), in certain places (where). Perhaps it is space-time intervals then which give life to organisms. Space-time intervals have been largely ignored in scientific study, theory, and research. When vigorously applied, space-time intervals explain many of the mysteries of science (the nature of conscious experience, the subjectivity of conscious experience, the neural correlate of conscious experience, a unified concept of gravity, a Theory of Everything, the nature of dark matter and dark energy, the connection of our observed physical reality to actual physical reality, the nature of reality, the nature of life). Other mysteries and problems of science may also yield to the specter of space-time intervals (the origin of the Universe; the evolution of the Universe; the origin of life;B. The cosmological constant and dark energy. Reviews of Modern Physics 2003; 75(2): 559-606. Penrose R. The Road to Reality. Vintage Books, London, 2005. Petkov V. Minkowski Spacetime: A Hundred Years Later. Springer, Berlin, 2010. Pogosyan P. Lecture 20: Black Holes-The Einstein Equivalence Principle. University of Alberta, Edmonton, 2011. Priest SH. Encyclopedia of Science and Technology. Sage Publications, New York, 2010. Purcell EM and Morin DJ. Electricity and Magnetism, (3rd Ed.). Cambridge University Press, Cambridge, England, 2013. Randall L. Warped Passages: Unraveling the Universe's Hidden Dimensions. Ecco Press, New York, 2005. Ratcliff JG. Foundations of Hyperbolic Manifolds. Springer-Verlag, New York, 2006. Ratra B and Peebles PJE. Cosmological consequences of a rolling homogeneous scalar field. Physical Review D 1988; 37: 3406. Roberts T and Schleif S. What is the