Pages with the most categories
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- Efficiency (5 categories)
- Rural population (5 categories)
- Pressure (5 categories)
- Coal fired power plant (5 categories)
- OECD (5 categories)
- Simple machine (5 categories)
- Environment (5 categories)
- Primary vs end use accounting (5 categories)
- Total primary energy supply (5 categories)
- Battery (5 categories)
- Energy transformations (5 categories)
- Pollutant (5 categories)
- Environmental impact (5 categories)
- Gasoline (5 categories)
- Energy production (5 categories)
- Big Bang (5 categories)
- Pollution (5 categories)
- Carbon monoxide (5 categories)
- Charcoal (5 categories)
- Uranium mining (5 categories)
- Energy vs power (5 categories)
- Hydraulic fracturing (5 categories)
- Pulley (5 categories)
- Wind farm (4 categories)
- Fractional distillation (4 categories)
- Nuclear fuel (4 categories)
- Mechanical energy (4 categories)
- Work (4 categories)
- Isothermal (4 categories)
- Geothermal industrial heat (4 categories)
- Liquefied natural gas (4 categories)
- Voltage (4 categories)
- Fluid (4 categories)
- Reserve vs occurrence (4 categories)
- Carbon (4 categories)
- Water (4 categories)
- Passive solar heating and cooling (4 categories)
- Photovoltaic cell (4 categories)
- Control rod (4 categories)
- Isotone (4 categories)
- Refrigerator (4 categories)
- Oil sands (4 categories)
- Chemical (4 categories)
- Heavy water (4 categories)
- Wind power (4 categories)
- Hydrocarbon (4 categories)
- Thermal efficiency (4 categories)
- Secondary fuel (4 categories)
- Electron (4 categories)
- Hydrogen (4 categories)
- Insolation (4 categories)
- Solar panel orientation (4 categories)
- Commercial energy use (4 categories)
- Human development index (4 categories)
- Diesel (4 categories)
- Butane (4 categories)
- Time scale of the universe (4 categories)
- Global warming (4 categories)
- BHP (4 categories)
- Fossil fuel (4 categories)
- Thermal energy (4 categories)
- Rising sea level (4 categories)
- Acid rain (4 categories)
- Hydrogen as an energy currency (4 categories)
- Barrels of oil equivalent (4 categories)
- Liquid (4 categories)
- Air (4 categories)
- Energy service (4 categories)
- Density (4 categories)
- Reservoir (4 categories)
- Carbon cycle (4 categories)
- Wind turbine (4 categories)
- Molecule (4 categories)
- Specific volume (4 categories)
- Climate vs weather (4 categories)
- Meter (4 categories)
- Radiation (4 categories)
- Kerosene (4 categories)
- Residential energy use (4 categories)
- Octane (4 categories)
- Levelized cost of energy (4 categories)
- Neutron (4 categories)
- Geothermal district heating (4 categories)
- Oil (4 categories)
- Carnot efficiency (4 categories)
- Solar chimney (4 categories)
- Power plant (4 categories)
- Non-dispatchable source of electricity (4 categories)
- Biome (4 categories)
- CANDU reactor (4 categories)
- Lever (4 categories)
- Energy efficient building design (4 categories)
- Geothermal electricity (4 categories)
- Power servant (4 categories)
- Transportation (4 categories)
- Methane (4 categories)
- Nuclear chain reaction (4 categories)
- Kilogram (4 categories)
- Friction (4 categories)
- Thermal power (4 categories)
- Nuclear reactor (4 categories)
- Geothermal energy (4 categories)
- Heat (4 categories)
- Joule (4 categories)
- Transportation energy use (4 categories)
- Uranium enrichment (4 categories)
- Gross domestic product (4 categories)
- Energy conversion technology (4 categories)
- Hybrid lighting (4 categories)
- Electric motor (4 categories)
- Newton (4 categories)
- Earth's heat balance (4 categories)
- Sun (4 categories)
- Energy use per person (4 categories)
- Wind (4 categories)
- Gas (4 categories)
- Nuclear waste (4 categories)
- Electrical generation (4 categories)
- Adiabatic (4 categories)
- Heat engine (4 categories)
- Horsepower (4 categories)
- Hydropower (4 categories)
- Layers of the atmosphere (4 categories)
- Energy currency (4 categories)
- Mass (4 categories)
- Molar heat capacity (4 categories)
- Nuclear fission (4 categories)
- HVAC (4 categories)
- Smog (4 categories)
- Hydroelectric facility (4 categories)
- Electrical grid (4 categories)
- Piston (4 categories)
- Sunlight (4 categories)
- Devonian (3 categories)
- Tidal stream generator (3 categories)
- Electric charge (3 categories)
- Triassic (3 categories)
- Electricity as an energy currency (3 categories)
- Solid (3 categories)
- Concentration in parts per (3 categories)
- Metric ton (3 categories)
- Fenestration (3 categories)
- Cross section of the Earth (3 categories)
- Molar mass (3 categories)
- Direct current (3 categories)
- Negative climate feedback (3 categories)
- Geologic period (3 categories)
- Life expectancy (3 categories)
- Smoke (3 categories)
- Coal seam (3 categories)
- Watt-hour (3 categories)
- Holocene (3 categories)
- Erathem (3 categories)
- Photosynthesis (3 categories)
- Control function (3 categories)
- Hydroelectric reservoir (3 categories)
- Pound foot (3 categories)
- In situ uranium mining (3 categories)
- Fuel cell (3 categories)
- Thermohaline circulation (3 categories)
- Canada residential energy use (3 categories)
- Greenhouse effect on other planets (3 categories)
- Heat pump (3 categories)
- Precambrian (3 categories)
- Biodiversity (3 categories)
- Temperature of the Earth (3 categories)
- Trillion cubic feet (3 categories)
- Air pollution control devices (3 categories)
- Conduction (3 categories)
- Wind farm vs wind turbine (3 categories)
- Forced convection (3 categories)
- Fracturing fluid (3 categories)
- Propane (3 categories)
- Ionizing radiation (3 categories)
- Radioisotope thermal generator (3 categories)
- CO2 footprint (3 categories)
- Geologic series (3 categories)
- Watt-year (3 categories)
- Erg (3 categories)
- Miles per gallon gasoline equivalent (3 categories)
- Pounds per square inch (3 categories)
- Synthetic natural gas (3 categories)
- Tar sands (3 categories)
- Pumped storage (3 categories)
- Geothermal power plants (3 categories)
- Celsius (3 categories)
- Liquefied natural gas industry (3 categories)
- Hypoxia (3 categories)
- Bioethanol (3 categories)
- Building envelope (3 categories)
- Electric current (3 categories)
- Ocean heat (3 categories)
- Global surface temperature anomaly (3 categories)
- Ground level ozone (3 categories)
- Coal ash (3 categories)
- Fertility rate (3 categories)
- Crude oil (3 categories)
- Molecular hydrogen (3 categories)
- Negative feedback (3 categories)
- Nuclear fusion (3 categories)
- Geologic stage (3 categories)
- Energy from nuclei (3 categories)
- Alkene (3 categories)
- Ethane (3 categories)
- Miles per hour (3 categories)
- Regenerative braking (3 categories)
- Nucleus (3 categories)
- Candela (3 categories)
- Gigatonne (3 categories)
- Oil sands extraction (3 categories)
- Emissions (3 categories)
- Mercury (pollutant) (3 categories)
- Ampacity (3 categories)
- Natural gas formation (3 categories)
- Internal combustion engine (3 categories)
- Carbon capture and storage (3 categories)
- Chemical bond (3 categories)
- Silurian (3 categories)
- Energy distribution technology (3 categories)
- Soot (3 categories)
- Positive climate feedback (3 categories)
- Raisebore mining (3 categories)
- Geologic system (3 categories)
- Ohm's law (3 categories)
- Secondary pollutant (3 categories)
- Alkyne (3 categories)
- Ethanol (3 categories)
- Nitrogen oxide (3 categories)
- Braking (3 categories)
- Oil sands land reclamation (3 categories)
- Volume (3 categories)
- Heat transfer mechanisms (3 categories)
- Metal (3 categories)
- Fly ash (3 categories)
- Prefixes (3 categories)
- Natural gas power plant (3 categories)
- Biomagnification (3 categories)
- Global warming potential (3 categories)
- Sound (3 categories)
- Hydrocarbon combustion (3 categories)
- Discovery of the greenhouse effect (3 categories)
- Blackbody radiation (3 categories)
- Isobar (nuclear) (3 categories)
- Nuclear isomer (3 categories)
- Geologic time scale (3 categories)
- Carboniferous (3 categories)
- Gravity (3 categories)
- Velocity (3 categories)
- Photovoltaic system (3 categories)
- Conventional vs unconventional resource (3 categories)
- Motor vehicle (3 categories)
- System and surrounding (3 categories)
- Non-conservative force (3 categories)
- Cap rock (3 categories)
- Transmutation (3 categories)
- Greenland ice sheet (3 categories)
- Air conditioner (3 categories)
- Heat vs temperature (3 categories)
- Ampere (3 categories)
- Superconducting magnetic energy storage (3 categories)
- Turbidity (3 categories)
- Matter (3 categories)
- Source rock (3 categories)
- Positive feedback (3 categories)
- Proton (3 categories)
- Dispatchable source of electricity (3 categories)
- Thermal insulation (3 categories)
- Rankine (3 categories)
- Earth's energy budget (3 categories)
- Nuclear power (3 categories)
- Knot (3 categories)
- Light year (3 categories)
- Electron volt (3 categories)
- Cogeneration (3 categories)
- Megawatt (3 categories)
- Alternating current (3 categories)
- Arsenic (3 categories)
- Insulation (3 categories)
- Liter (3 categories)
- Shale oil (3 categories)
- Energy storage (3 categories)
- Meters per second (3 categories)
- Atomic mass unit (3 categories)
- Pressure volume diagram (3 categories)
- Natural gas reserve (3 categories)
- Radiative forcing (3 categories)
- McKelvey box (3 categories)
- Albedo (3 categories)
- Heptane (3 categories)
- Hydrocarbon resource (3 categories)
- Gallium (3 categories)
- Nuclear power plant (3 categories)
- Oil and gas reservoir (3 categories)
- Solar collector (3 categories)
- Speed of light (3 categories)
- Evapotranspiration (3 categories)
- Ash (3 categories)
- Dam failures (3 categories)
- R-value (3 categories)
- Nonane (3 categories)
- Jet bore mining (3 categories)
- Remote sensing (3 categories)
- Uranium (3 categories)
- Permian (3 categories)
- Wiens Law (3 categories)
- Farad (3 categories)
- Atomic number (3 categories)
- International system of units (3 categories)
- Geologic age (3 categories)
- Resistance (3 categories)
- Gram (3 categories)
- Ordovician (3 categories)
- Chemical reaction (3 categories)
- Absolute zero (3 categories)
- Growing algae (3 categories)
- Coal formation (3 categories)
- Alcohol (3 categories)
- Hydroelectric dam (3 categories)
- Neutron number (3 categories)
- Ultraviolet radiation (3 categories)
- Climate feedback (3 categories)
- Energy mix (3 categories)
- Everyday force (3 categories)
- Hydrogen sulfide (3 categories)
- Sulfur oxides (3 categories)
- Flaring (3 categories)
- Nonlinearity (3 categories)
- Elastic potential energy (3 categories)
- Cesium (3 categories)
- Solar thermal power plant (3 categories)
- Compressed air energy storage (3 categories)
- Deuterium (3 categories)
- Bitumen (3 categories)
- Geologic eon (3 categories)
- Resistivity (3 categories)
- Energy flow in ecosystems (3 categories)
- Particulate matter (3 categories)
- Environmental impacts of oil sands (3 categories)
- Anticline (3 categories)
- BTU/hr (3 categories)
- Boiling point (3 categories)
- Gamma decay (3 categories)
- Geothermal gradient (3 categories)
- Magnet (3 categories)
- Pentane (3 categories)
- Weather (3 categories)
- Yukon power grid (3 categories)
- Flood (3 categories)
- Bcm (3 categories)
- British thermal unit (3 categories)
- Jurassic (3 categories)
- Tidal force (3 categories)
- Law of conservation of energy (3 categories)
- AC generation (3 categories)
- Peroxyacyl nitrate (3 categories)
- Steam (3 categories)
- Foot (3 categories)
- Prevailing winds (3 categories)
- Kilometers per hour (3 categories)
- Geologic epoch (3 categories)
- Graphite (3 categories)
- Hexane (3 categories)
- Eonothem (3 categories)
- Cambrian (3 categories)
- Oil formation (3 categories)
- Volatile organic compound (3 categories)
- Solar energy (3 categories)
- Pipeline (3 categories)
- Becquerel (3 categories)
- Tidal power (3 categories)
- Solar water heating (3 categories)
- Steam assisted gravity drainage (3 categories)
- Feedback cycle (3 categories)
- Pollution vs waste (3 categories)
- Foot pound (3 categories)
- Ion (3 categories)
- Geologic era (3 categories)
- Gravimetric energy density (3 categories)
- Second (3 categories)
- MPG (3 categories)
- Coal reserve (3 categories)
- Watt (3 categories)
- Photon (3 categories)
- In situ oil sands mining (3 categories)
- Newton meter (3 categories)
- Geothermal heating (3 categories)
- Linear no-threshold model (3 categories)
- Greenhouse effect (3 categories)
- Oxygen (3 categories)
- Solar energy to the Earth (3 categories)
- Natural carbon cycle (2 categories)
- Biodiesel (2 categories)
- Interglacial (2 categories)
- Fukushima (2 categories)
- Drought (2 categories)
- KW (2 categories)
- Gear (2 categories)
- Carbohydrate (2 categories)
- Lb (2 categories)
- SMES (2 categories)
- Charge (2 categories)
- Logarithmic scale (2 categories)
- Ground (2 categories)
- Siemens (2 categories)
- Mass-energy equivalence (2 categories)
- Heating registers and vents (2 categories)
- Engine (2 categories)
- Petrodiesel (2 categories)
- Steam coal (2 categories)
- Pondage (2 categories)
- Avogadro's number (2 categories)
- Illiquid asset (2 categories)
- Supercritical water cooled reactor (2 categories)
- Profit (2 categories)
- Bituminous coal (2 categories)
- Thermal conductivity (2 categories)
- GFI (2 categories)
- EROI (2 categories)
- Kilowatt-hour (2 categories)
- Tonne of oil equivalent (2 categories)
- Electric switch (2 categories)
- Offshore wind turbine (2 categories)
- Carbon sequestration (2 categories)
- Types of hydrogen fuel (2 categories)
- Gravitational constant (2 categories)
- Chlorine (2 categories)
- MPG Illusion (2 categories)
- Access to non-solid fuel (2 categories)
- Habitat range change (2 categories)
- Pascal (2 categories)
- Alkaline (2 categories)
- Specific heat capacity (2 categories)
- Miles per gallon (2 categories)
- Sub-bituminous (2 categories)
- Fish screen (2 categories)
- Curtain wall (2 categories)
- Monopoly (2 categories)
- Infrared radiation (2 categories)
- Tangible asset (2 categories)
- Dopant (2 categories)
- Newton metre (2 categories)
- Gas centrifuge for uranium enrichment (2 categories)
- Reforestation (2 categories)
- Eco-investing (2 categories)
- Nucleon (2 categories)
- LNG (2 categories)
- Transformer drum (2 categories)
- Rpm (2 categories)
- Electrical insulation (2 categories)
- Separative work unit (2 categories)
- Emission (2 categories)
- Ozone (2 categories)
- Climate scenario (2 categories)
- Magnetic force (2 categories)
- Afforestation (2 categories)
- Solar module (2 categories)
- Energy saving (2 categories)
- Percent (2 categories)
- Combustion (2 categories)
- Mercury (2 categories)
- Well casing (2 categories)
- Amp (2 categories)
- Hour (2 categories)
- Spring potential energy (2 categories)
- External cost (2 categories)
- Planck's constant (2 categories)
- Cost-effectiveness analysis (2 categories)
- Hyperinflation (2 categories)
- Super-capacitor (2 categories)
- NAO (2 categories)
- Dewatering algae (2 categories)
- Intergovernmental Panel on Climate Change (2 categories)
- Fukushima disaster (2 categories)
- RSI (2 categories)
- Dry scrubber (2 categories)
- KWh (2 categories)
- Tight gas (2 categories)
- Gear train (2 categories)
- Electric circuit (2 categories)
- Leapfrogging (2 categories)
- SOx (2 categories)
- Electricity generation (2 categories)
- Charge carrier (2 categories)
- Long tail-pipe problem (2 categories)
- AFV (2 categories)
- Ground fault circuit interrupter (2 categories)
- Sievert (2 categories)
- Energy density of storage devices (2 categories)
- Coal-fired power plant (2 categories)
- Heating vent (2 categories)
- Solute (2 categories)
- Mho (2 categories)
- Hydro turbine (2 categories)
- Fertile (2 categories)
- Population replacement rate (2 categories)
- Crossflow turbine (2 categories)
- Imperial system of units (2 categories)
- Primary energy accounting (2 categories)
- Discharge (2 categories)
- Black carbon (2 categories)