The Precautionary Principle is a guiding framework for decision-making that anticipates how our actions will affect the environment and health of future generations. The precautionary principle and its application to environmental hazards and their uncertainties began to emerge as an explicit and coherent concept within environmental science
Daisyworld is the name of a mathematically based software program developed by James Lovelock to mimic an important element of the Earth-Sun system model when he was working on the Gaia hypothesis.
The hydrosphere is a term that includes the total of Earth’s water resources such as lakes, oceans, streams, underground, surface water and finally snow and ice. The perennially frozen parts of the hydrosphere collectively referred to as the cryosphere.
Bio-productivity (biological productivity)is a term used to describe the measurement of the biologic production per hectare per annum.
Bio-capacity (biological capacity) is a term used to describe the total usable biological production capacity in a given year of a biologically productive area, such as within a country.
Earth system science (Gaia Hypothesis) is a term used to describe science that studies the whole Earth as a system of many interacting parts and focuses on the changes within and between these.