Maybe another 4 billion years to go: right now, we"re about half way through. Our species, that are relatively young, is half time entertainment on the history of the planet. How our planet works (plate tectonics) from its deep interior to its surface. Earth history: using plate tectonic theory to reconstruct past continents/ oceans (the supercontinent cycle) Geological evolution of canada and ontario over 4 billion years. Using geological science to manage environmental problems and hazards in canada and properly develop resources (minerals, oil, water) in an environmentally sustainable fashion. To understand any environmental issue, we need to understand how the planet works. Grand theory in the science of geology. Developed in the late 60s by tuzo wilson, a geophysics (using law of physics to map the interior of the planet) he saw that as the plate tectonics move around, so does the continents and oceans.