This is a list of environmental topics. They relate to the effect of human activity on the environment.

• (E-grass: see) Miscanthus (see "biofuel" under Uses)
• E-waste (electronic waste)
• (E10: see) common alcohol fuel mixtures
• (E15: see) common alcohol fuel mixtures
• (E20: see) common alcohol fuel mixtures
• (E85: see) common alcohol fuel mixtures
• (E95: see) common alcohol fuel mixtures
• (E100: see) common alcohol fuel mixtures
• early uses of petroleum
• Earth Charter
• (earth dam) earthen dam
• Earth Day
• Earth Explorer
• Earth First! (environmental defense movement)
• Earth from the Air ("collection of environmental photographs")
• Earth house ("style for eco-friendly housing")
• (Earth Houses: see) souterrain ("type of underground structure")
• Earth immune system
• Earth in the Balance (book by Al Gore)
• Earth Rights Institute
• (Earth Satellite: see) satellite
• Earth science (geoscience) (the geosciences) (the Earth sciences)
• Earth sheltering
• Earth Simulator (ES) (in Japan) ("developed ... for climate simulation")
• Earth Summit (in 1992) (in Rio de Janeiro in Brazil)
• Earth Summit 2002 (in Johannesburg in South Africa)
• Earth-house - see dugout (shelter) (dug-out) (mud hut) ("a shelter dug out of the ground")
• Earthdive ("project ... to protect the ocean ecosystem")
• Earthjustice ("specializes in pro-environmental litigation")
• Earthlife Africa (a South African environmental organization)
• EarthSave ("vegan advocacy group")
• Earthwatch (environmental organization)
• Earthweek - A Diary of the Planet (syndicated newspaper column)
• (eating the Earth: see) ecophagy ("the consuming of an ecosystem")
• Environment and Conservation Organisations of Aotearoa New Zealand (formerly CoEnCo)
• Eco Books ("on-line bookstore featuring [ecological] books")
• Eco drive ("solar powered wrist watches")
• Eco-action (environmental group)
• Eco-anarchism
• Eco-capitalist (see same for "eco-business")
• Eco-defender - see environmental security
• Eco-defense
• Eco-efficiency
• Eco-evolution
• Eco-friendly - see ecology
• Eco-gastronomy - see Slow Food
• Eco-imperialism
• eco-industrial park
• Eco-marathon
• eco-san (ecological sanitation)
• (eco-syndicalism) green syndicalism
• eco-terrorism
• eco-warrior
• ecoAuto - Canadian government fuel-efficient vehicle purchase incentive program
• ecocentrism
• ecocide
• ecocities
• ecocomposition (""theory of writing instruction that ... incorporates [goals] within an ecological view")
• ecocriticism ("the study of the relationship between the literature and the natural environment")
• ecodriving
• EcoDuro, Inc. ("holds patents ... for its unique engineered paper pallets")
• (ecofact) biofact (in archaeology)
• ecofascism
• ecofeminism
• ecoforestry
• ecohydrology
• ecoinformatics
• ecolabel
• Ecologic Foundation (based in New Zealand)
• (ecological and social indicator: see) Genuine Progress Indicator (GPI)
• ecological anthropology
• (ecological breastfeeding: see) lactational amenorrhea method (LAM) (see under Breastfeeding Infertility) (affecting the dairy industry, which affects the environment)
• ecological burial
• (ecological catastrophe) environmental disaster
• (Ecological City Transportation System: see) Fuel Cell Bus Club (see under ECTOS)
• (ecological community) biocoenosis (biocoenose) (biocenose) (biotic community)
• ecological crisis (ecological disaster)
• (ecological damage: see) ecological health
• (ecological deficit: see) natural capital (see paragraph 6)
• (ecological devastation: see) ecological health
• ecological economics
• ecological effects of biodiversity
• ecological effects of transgenic plants
• ecological energetics
• ecological engineering
• (ecological factor: see) ecology
• ecological footprint
• ecological funeral (promession)
• ecological genetics
• Ecological Genetics
• ecological health
• (ecological hotspot: see) biodiversity hotspot
• ecological humanities
• ecological imperialism
• (ecological imprint) ecological footprint
• Ecological Intelligent Design
• (ecological integrity) ecological health
• ecological land classification
• (ecological load: see) carrying capacity
• (ecological loss: see) ecological health
• ecological modernization
• (ecological morality) environmental ethics
• (ecological movement) ecology movement
• ecological psychology (EP) ("the study of human behavior and its environment")
• (ecological restoration: see) restoration ecology
• ecological sanitation
• Ecological Society of America (ESA)
• ecological wisdom
• Ecology
• Ecology Functional Groups
• ecology movement
• ecologyfund.com
• (econazi: see) eco-terrorism
• economic vegetarianism
• economics of biodiversity
• economics of global warming
• ecophagy ("the consuming of an ecosystem")
• ecopoiesis ("the origin of an ecosystem")
• ecopsychology
• EcoQuest ("a series of educational adventure games")
• ecoregion (see also list of ecoregions)
• (ecoregion PA0906: see) Tigris-Euphrates river system
• (ecoregion PA1303: see) *(ecoregion PA1314: see) Gobi Desert
• ecoregion conservation status
• (ecoregional democracy: see) bioregional democracy
• ecoregions in Australia
• ecoregions in India
• ecoregions of Japan
• ecoregions of Madagascar
• ecoregions of New Zealand
• ecoregions in the Philippines
• ECOS - conservation journal
• ecosophy (ecophilosophy)
• (ecosphere [ecology]: see) biosphere (see paragraph 3)
• ecosphere (education)
• (ecosynthesis: see) planetary ecosynthesis ("the making of a home for life on a planetary scale")
• ecosystem diversity
• ecosystem ecology
• ecosystem engineer
• ecosystem services
• ecosystem valuation
• ecotage
• Ecotage! - book
• Ecotax
• ecotone
• ecotope
• Ecotopia: The Notebooks and Reports of William Weston (book)
• ecotopian fiction
• ecotourism
• ecotoxicology
• ecotype
• ecovangelist
• ecovillage (see also list of ecovillages)
• Ecovillage Training Center (in Tennessee in the US)
• ecozen
• ecozone
• Education for Sustainable Development (2005-2014) (decade designated by the UN)
• Effective Cycling ("cycling educational program")
• effective population size (in population genetics)
• effects of Christmas on the environment
• effects of global warming
• effects of the automobile on societies (see under Environmental changes)
• efficient energy use
• effluent
• (electric bicycle: see) motorized bicycle (see under Environmental effects)
• electric bicycle laws
• (electric energy meter) electricity meter
• electromagnetic environment (EME)
• (electromagnetic interference [EMI]: see) Radio Frequency Interference (RFI)
• electromagnetic interference control
• electronic pest control
• Electronic Road Pricing (ERP)
• electronic waste ("e-waste") ("Waste Electrical and Electronic Equipment") ("WEEE")
• Electronic Waste Recycling Act of 2003 (EWRA) (in California in the US)
• Electronic Waste Recycling Fee (in California in the US)
• electrosmog
• electrostatic precipitator (ESP) (electrostatic air cleaner)
• Elephant Sanctuary, Hohenwald (in Tennessee in the US)
• (EM radiation) electromagnetic radiation
• emission factor
• Emission Reduction Unit (ERU) (involving greenhouse gases)
• (emission security: see) TEMPEST ("limiting electric or electromagnetic radiation")
• emission standard
• emission trading
• Encyclopedia of World Problems and Human Potential
• endangered Australian fauna
• endangered species (see also list of endangered species and list of endangered species in the British Isles and list of endangered species in the US and list of endangered species in Vietnam)
• Endangered Species Act (ESA) (in the US)
• (energy analysis: see) life cycle energy analysis
• Energy and Environmental Research Center (EERC) (in North Dakota in the US)
• energy conservation
• energy demand management
• energy economics (see under Environment vs. Economy and under Energy collapse)
• energy efficiency (in physics and in engineering)
• (energy efficiency class: see) EU energy label
• (energy efficient building: see) green building
• (energy efficient house: see) green building
• energy harvesting
• Energy Hog (energy conservation mascot)
• Energy Information Administration (EIA) (part of US Department of Energy)
• energy intensity ("a measure of the energy efficiency of a nation's economy")
• (energy label: see) EU energy label
• energy management system (EMS)
• (energy resource: see) energy conversion (see also list of energy resources)
• (energy saving: see) energy conservation
• Energy Star (US government program to promote energy-efficient consumer products)
• energy use and conservation in the United Kingdom
• English Nature (government agency in the UK)
• environment
• (environment [biology]: see) ecology (ecological science)
• Environment 2004
• Environment Act 1986 (New Zealand)
• Environment Act 1995 (in the UK)
• Environment Agency (of England and Wales)
• Environment and Conservation Organisations of Aotearoa New Zealand (ECO) (previously CoEnCo)
• Environment and Heritage Service (in the UK)
• Environment Campus Birkenfeld (branch of a university in Germany)
• (Environment Canada) Department of the Environment (Canada)
• Environment Hawaii (monthly newsletter)
• environment of China
• (Environment Secretary) Secretary of State for Environment, Food and Rural Affairs (in the UK)
• Environment Victoria (NGO in Australia)
• Environment Wales (partnership of voluntary organisations)
• environmental accounting
• (environmental activist: see) environmentalist
• environmental agreement
• (environmental alarmism: see) alarmism
• Environmental and Social Studies (ESS)
• environmental archaeology
• (environmental assessment: see) environmental impact assessment (EIA)
• environmental audits
• environmental benefits of vegetarianism
• environmental biotechnology
• (environmental change: see) climate change
• Environmental Change Network (ECN) (in the UK)
• environmental chemistry
• (Environmental Cleaners' Company: see) Worshipful Company of Environmental Cleaners (in the UK)
• environmental concerns with electricity generation
• (environmental conservation: see) conservation movement
• environmental consulting
• (environmental contaminant: see) pollution
• Environmental Control System (of an airplane)
• Environmental Defense (formerly, Environmental Defense Fund [EDF]) (based in the US)
• (environmental degradation: see) environmental disaster
• environmental design
• environmental determinism (see also climatic determinism [equatorial paradox])
• environmental economics
• (environmental education: see) environment (see also list of environmental studies topics)
• environmental effects of fishing
• environmental effects on physiology
• environmental engineering
• environmental ethics
• environmental factor
• environmental finance
• (environmental genomics) metagenomics (community genomics)
• environmental geography
• environmental geology
• environmental gradient
• (environmental group: see) environmentalism
• environmental hazard
• environmental health
• (environmental health hazard: see) list of environmental health hazards
• environmental history
• (environmental illness: see) multiple chemical sensitivity (MCS) (also called "20th century syndrome")
• environmental impact assessment (EIA)
• Environmental Impact Report (EIR) (in California in the US)
• Environmental Information Regulations 2004 (in the UK)
• (environmental issues: see) environmentalism (see also list of environmental issues)
• environmental journalism
• environmental justice
• (environmental lapse rate: see) adiabatic lapse rate
• environmental law
• Environmental Law Service (ELS) (a Czech non-governmental organization)
• Environmental Life Force (ELF) ("radical group" in the US)
• environmental management
• environmental management scheme
• Environmental Measurements Laboratory (EML) (owned and operated by the US government)
• environmental medicine (clinical ecology)
• (environmental mitigation: see) environmental engineering
• Environmental Modeling Center (EMC)
• (environmental modification: see) Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques (ENMOD Convention) (international treaty)
• environmental movement
• environmental movement in New Zealand
• environmental movement in the United States
• (environmental noise) noise (environmental)
• (environmental organization: see) list of environmental organizations
• Environmental policy
• environmental pollution
• (environmental protection: see) environmental movement
• (Environmental Protection Agency: see) United States Environmental Protection Agency (EPA) (USEPA) (in the US)
• environmental protection in Japan
• environmental psychology (see under Impact on the Built Environment)
• Environmental Quality Improvement Act
• environmental racism
• (environmental regulation) environmental law
• (Environmental Research Center: see) Smithsonian Environmental Research Center (SERC) (in the US)
• environmental resistance
• environmental restoration
• (environmental rights: see) environmentalism
• Environmental Risk Management Authority (ERMA) (in New Zealand)
• (environmental satellite: see) Earth observation satellite
• environmental science
• environmental security
• environmental skepticism
• environmental sociology
• environmental standard
• environmental studies
• environmental suit
• Environmental Sustainability Index (ESI)
• Environmental Tax
• environmental technology
• Environmental Technology Laboratory (ETL)
• (environmental tourism) ecotourism
• Environmental Toxins and Fetal Development
• Environmental Transport Association (in the UK)
• environmental vandalism
• environmental vegetarianism
• environmentalism
• (environmentalism and George W. Bush: see) George W. Bush (see under Energy and the environment)
• environmentalist
• environmentally friendly
• Environmentally Sensitive Area (ESA) (in the UK)
• Environmentally Sensitive Areas Scheme (in the UK)
• environmentology (environmental science)
• (envirosecurity: see) environmental security
• Envirothon (high school competition) (in North America)
• Envisat (Environmental Satellite) (built by the European Space Agency)
• (EPA) (Environmental Protection Agency: see) United States Environmental Protection Agency (USEPA) (in the US)
• EPA 2004 fuel economy report appendix M2
• EPA 2004 fuel economy report appendix M2 (Ton Mile)
• Epcot (Experimental Prototype Community of Tomorrow) (in Florida) ("a utopian city of the future")
• erosion
• (eructation) burping (belching) (ructus) (see "greenhouse effect" under In animals)
• ESA Space Debris Telescope
• ethanol (data page)
• (ethanol fuel: see) alcohol fuel
• ethical consumerism (ethical purchasing) (ethical shopping) (see same for "ethical sourcing")
• (ethical tourism: see) ecotourism
• Ethical Trading Initiative (ETI)
• EthicalNetwork.org
• ethics of vegetarianism
• ethnobiology
• ethnobotany ("the study of the relationship between plants and people")
• ethylmercury (ethyl mercury) ("toxic and bioaccumulative")
• (EU biotechnology patents directive of 1998) directive on the patentability of biotechnological inventions
• EU energy label
• EU-Eco-regulation ("on organic production of agricultural products")
• European Academy of Environmental Affairs
• European and Mediterranean Plant Protection Organization
• European Bioinformatics Institute
• European Biomass Association (AEBIOM) (Association Européenne pour la Biomasse)
• European Climate Change Programme
• European Cyclists' Federation
• European Ecological Federation
• European emission standards (for motor vehicles)
• European Environment Agency
• European Federation for Transport and Environment
• European Nuclear Disarmament
• European Nuclear Disarmament Journal
• European Remote-Sensing Satellite
• EuroVelo ("the European cycle route network")
• eutrophication
• EverLife Flashlight ("uses no batteries or bulbs")
• (excessive lighting: see) light pollution
• excreted drugs
• exotic pollution
• (exotic species) introduced species
• exotoxin
• (Experimental Prototype Community of Tomorrow) Epcot (in Florida) ("a utopian city of the future")
• exploding tree
• exploding whale
• Exploring the Earth and the Cosmos (book)
• Expo '74 (in Washington state in the US) ("environmentally themed World's Fair")
• (Expo '93) Taejŏn Expo '93 (in South Korea) ("sub-themes around sustainable and 'green' development")
• Expo '98 (in Lisbon in Portugal) (theme: "The Oceans: A Heritage for the Future")
• Expo 2000 (in Hanover in Germany) (motto: "Man, Nature, Technology")
• Expo 2005 (east of Nagoya in Japan) (theme: "Nature's Wisdom")
• Expo 2008 (in Zaragoza in Spain) (theme: "Water and sustainable development")
• extensive farming (extensive agriculture)
• Extermination - see pest control
• extinct Australian animals
• extinct birds
• extinction (in biology and ecology)
• extirpation (local extinction)
• Exxon Valdez oil spill (in the US)
• Eyemouth Disaster (in 1881) (in Scotland in the UK)