top_category
stringclasses
1 value
subcategory_1
stringclasses
3 values
subcategory_2
stringclasses
10 values
subcategory_3
stringclasses
54 values
subcategory_4
stringclasses
172 values
subcategory_5
stringclasses
602 values
subcategory_6
stringlengths
3
65
subcategory_7
stringlengths
3
94
subcategory_8
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Colliers
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Coal formations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Coal hulks
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Coal organizations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Coal-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Coal
Coal technology
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Documentary films about fossil fuels
Documentary films about coal in the United States
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Documentary films about fossil fuels
Documentary films about hydraulic fracturing
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Documentary films about fossil fuels
Documentary films about petroleum
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Environmental issues with fossil fuels
Anti-fracking movement
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Environmental issues with fossil fuels
Climate change
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Environmental issues with fossil fuels
Environmental impact of the coal industry
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Environmental issues with fossil fuels
Fossil fuel phase-out
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Environmental issues with fossil fuels
Environmental impact of the petroleum industry
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel phase-out
Coal phase-out
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel phase-out
Electric vehicle conversion
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Fossil fuel power stations by country
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Fossil fuel power stations by continent
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Coal gas-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Coal-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Proposed fossil fuel power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Natural gas-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Oil shale-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Oil-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Fossil fuel power stations
Peat-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas by country
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas by continent
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas fields
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Petroleum geology
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas infrastructure
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Liquefied natural gas
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Lists of natural gas power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas industry
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas organizations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas-fired power stations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas technology
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Unconventional gas
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Natural gas vehicles
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Natural gas
Well logging
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Peat
Peat mining
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Peat
Peatlands
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Peat
Peat-fired power stations by country
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum by continent
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum by country
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum geology
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum industry
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Oil refineries
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum organizations
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum products
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum politics
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Unconventional oil
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Works about petroleum
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Fossil fuels
Petroleum
Petroleum stubs
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Aulacogens
Mbéré Rift Valley
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Back-arc basins
Sea of Japan
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Back-arc basins
Taupō Volcanic Zone
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Back-arc basins
Tyrrhenian Sea
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Continental fragments
Alexander Archipelago
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Continental fragments
Barbados
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Continental fragments
Kodiak Archipelago
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Continental fragments
Terranes
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Continental fragments
Zealandia
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Cratons
Former cratons
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Geodynamics
Subduction
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Historical continents
Former supercontinents
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspot tracks
Anahim Volcanic Belt
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspot tracks
Hawaiian–Emperor seamount chain
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspot volcanism
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of the Atlantic Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of Europe
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of the Indian Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of North America
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of the Pacific Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Hotspots (geology)
Hotspots of the Southern Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Intracratonic basins
Paraná Basin
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic plateaus
Plateaus of the Atlantic Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic plateaus
Plateaus of the Indian Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic plateaus
Plateaus of the Pacific Ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic ridges
Oceanic ridges by sea or ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic ridges
Ridge volcanoes
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic trenches
Oceanic trenches by sea or ocean
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Oceanic trenches
Subduction zones
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Orogeny
Archean orogenies
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Orogeny
Orogenies by continent
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Orogeny
Phanerozoic orogenies
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Orogeny
Proterozoic orogenies
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Passive margins
Campos Basin
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Passive margins
Golfo San Jorge Basin
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Passive margins
Santos Basin
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Tectonic plates
Historical tectonic plates
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Aulacogens
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Rift basins
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Cenozoic rifts and grabens
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Firth of Thames
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Great Rift Valley
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Mesoproterozoic rifts and grabens
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Mesozoic rifts and grabens
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Mid-Atlantic Ridge
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Neoproterozoic rifts and grabens
null
Applied sciences
Applied and interdisciplinary physics
Geophysics
Structure of the Earth
Lithosphere
Plate tectonics
Rifts and grabens
Owens Valley
null