RENEWABLE A descriptor used for energy resources which can be consumed and replaced by natural or human interaction in 7 years or less.
Natural Renewable Examples Hydropower, Wind, Solar, Tidal, Geothermal
Human Renewable Examples Ethanol, Biodiesel, Biogas, NH3, Pumped-Hydro Storage Flywheels, Compressed Air, Gravity Wells Ultra-Capacitors, Flow Batteries
| SUSTAINABLE Use and Development "Meets the needs of the present without compromising the ability of future generations to meet their needs."
PRECAUTIONARY PRINCIPLE "The precautionary principle states that if there is a risk that an action could cause harm, and there is a lack of scientific consensus on the matter, the burden of proof is on those who would support taking the action"
Brundtland Commission
| CARBON NEUTRAL Balancing The Life Cycle Contribution to Atmospheric Carbon Dioxide Mining and Extraction Refining and Smelting Material Transportation Manufacturing Processes Product Transportation Product Operation Disposal and Recycling
Politically Controversial but Intuitively Correct
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