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- Saad Kassis-MohamedZimbabwean-Indian human rights defender and philanthropist
- Sackett v. Environmental Protection Agency (2023)2023 United States Supreme Court case
- Sacrifice zoneArea permanently changed by environmental or economic harm
- Safe Drinking Water Act1973-1974 US environmental legislation
- Safe Medical Device Amendments of 1990Safe Medical Device Amendments of 1990 or Safe Medical Devices Act sanctioned progressive
- Sagittaria sagittifoliaSagittaria sagittifolia (also called arrowhead because of the shape of its leaves) is an O
- Salinity in AustraliaSoil salinity and dryland salinity are two problems degrading the environment of Australia
- Salmon conservationProtection of salmon populations
- SamoselyResidents of the Chernobyl Exclusion Zone
- San Ignacio LagoonBay in Baja California Sur, Mexico
- San Ignacio, Baja California SurSan Ignacio is a town in Mulegé Municipality, Baja California Sur. The town had a 2020 cen
- San Onofre Nuclear Generating StationNuclear power plant south of San Clemente, California
- Sand miningPractice used to extract sand
- Sandstone Solar Energy ProjectProposed and unbuilt concentrated solar power station in Nevada
- Sanitary sewer overflowSanitary sewer overflow (SSO) is a condition in which untreated sewage is discharged from
- SarinChemical compound and chemical warfare nerve agent
- Saudi Arabia and weapons of mass destructionThe Kingdom of Saudi Arabia has not officially maintained or possessed the weapons of mass
- Savannah River SiteUS Department of Energy reservation in South Carolina
- SaxitoxinParalytic shellfish toxin
- Schedule 1 of the Chemical Weapons ConventionSchedule 1 substances, in the sense of the Chemical Weapons Convention, are chemicals whic
- Schmidt Glacier (Heard Island and McDonald Islands)Schmidt Glacier (53°3′S 73°24′E / 53.050°S 73.400°E) is a glacier, 0.7 nautical miles (1.3
- Scientific Committee on Problems of the EnvironmentThe Scientific Committee on Problems of the Environment (SCOPE) was established by the 10t
- Scrappage programA scrappage program is a government incentive program to promote the replacement of old ve
- Sea level rise in New ZealandEffect of climate change in New Zealand
- Seabed Arms Control Treaty1971 international agreement limiting nuclear weapons on the sea floor
- SEC CentreThe SEC Centre (originally known as the Scottish Exhibition and Conference Centre until 20
- Secondary treatmentBiological treatment process for wastewater or sewage
- Secretary of State for Environment, Food and Rural AffairsMember of the Cabinet of the United Kingdom
- Secretary of State for the EnvironmentFormer UK cabinet position
- Secretary of State for the Environment, Transport and the RegionsThe Secretary of State for the Environment, Transport and the Regions was a United Kingdom
- SeedChangeNon-profit organization
- Selective catalytic reductionChemical process
- Selenium oxydichlorideSelenium oxydichloride is the inorganic compound with the formula SeOCl2. It is a colorles
- SellafieldNuclear site in Cumbria, England
- Semicircular bundRainwater harvesting technique
- Service lifePeriod of time where an object can fulfill a function
- Seveso disasterToxic chemical leak in Italy in 1976
- Shearon Harris Nuclear Power PlantNuclear power plant located in New Hill, North Carolina
- Shelterwood cuttingShelterwood cutting removes part of the old forest stand to allow for a natural establishm
- Shiloh wind power plantWind farm in Solano County
- Sierra ClubAmerican environmental organization
- Sierra Club v. Morton1972 United States Supreme Court case
- Sihwa Lake Tidal Power StationDam in Sihwa Lake, Gyeonggi Province
- Silver State South Solar ProjectPhotovoltaic power plant located in Clark County, Nevada,
- Simple livingSimplified, minimalistic lifestyle
- Singapore and weapons of mass destructionFrom 1962 until 1971, British nuclear weapons were stored in Singapore, for delivery by ai
- Single-stream recyclingRecycling system
- Site of nature conservation interestDesignation by UK local authorities
- Six-pack ringsSix-pack rings or six-pack yokes are a set of connected plastic rings that are used in mul
- Sizewell C nuclear power stationNuclear power station under construction
- Sizewell nuclear power stationsOne active & one decommissioned nuclear power plant in England
- Skipjack Wind FarmWind farm off the shore of Delaware, US
- Sky HorseSky Horse (Chinese: 天馬飛彈; pinyin: Tiānmǎ Fēidàn) is a ballistic missile developed secretly
- SL-1Nuclear reactor that killed 3 in 1961
- SlagBy-product of smelting ores and used metals
- SlavutychCity in Kyiv Oblast, Ukraine
- SlimicideSlimicide (or antislime agent) is a broad-spectrum antimicrobial pesticide used to kill sl
- Slow FoodOrganization that promotes local food
- Slow sand filterWater purification device
- SludgeSemi-solid slurry
- Small arms and light weaponsSmall arms and light weapons (SALW) refers in arms control protocols to two main classes o
- Small Business Liability Relief and Brownfields Revitalization ActUnited States law enacted in 2002
- Small Is Beautiful1973 book by Ernst Friedrich Schumacher
- Smithsonian Environmental Research CenterResearch Center in Edgewater, MD
- Smokey BearU.S. Forest Service mascot used to raise awareness about wildfires
- Social accountingProcess of communicating the social effects of organizations to the society at large
- Social enterprise lendingSocial enterprise lending is a form of social finance which refers to the practice of offe
- Social entrepreneurshipApproach to develop, fund and implement solutions to social or environmental issues
- Social epidemiologyWhile epidemiology is "the study of the distribution and determinants of states of health
- Sodium arseniteChemical compound
- Sodium Reactor ExperimentNuclear power plant in California, US
- Sodium-ion batteryType of rechargeable battery
- Soil compactionIn geotechnical engineering, soil compaction is the process in which stress applied to a s
- Soil conditionerSoil additive
- Soil conservationPreservation of soil nutrients
- Soil contaminationPollution of land by human-made chemicals or other alteration
- Soil guideline valueSoil pollution metric used in the UK
- Soil microbiologyStudy of microorganisms in soil
- Soil qualityCapacity of soil to perform ecosystem services
- Solar carElectric car powered by solar energy
- Solar car racingSolar car racing refers to competitive races of electric vehicles which are powered by sol
- Solar fuelSynthetic chemical fuel produced from solar energy
- Solar inverterConverts output of a photovoltaic panel into a utility frequency alternating current
- Solar lampLamp powered by one or more solar panels
- Solar power by countryMany countries and territories have installed significant solar power capacity into their
- Solar power in AfricaAfrica is often referred to as the "Sun continent", as it is the continent where the Sun's
- Solar power in BelgiumSolar power in Belgium reached an installed capacity of 9.9 GW at the end of 2023, an incr
- Solar power in BrazilThe total installed solar power in Brazil was estimated at 53.9 GW at February 2025, which
- Solar power in CaliforniaSolar power has been growing rapidly in the U.S. state of California because of high insol
- Solar power in CanadaHistorically, the main applications of solar energy technologies in Canada have been non-e
- Solar power in ChileSolar power in Chile is an increasingly important source of energy. Total installed photov
- Solar power in CyprusSolar power in Cyprus is more abundant in its potential than in almost all of the rest of
- Solar power in DenmarkSolar power in Denmark amounts to 4,832 MW of grid-connected PV capacity at the end of Sep
- Solar power in HawaiiThe energy sector in Hawaii has rapidly adopted solar power due to the high costs of elect
- Solar power in HungarySolar power in Hungary has been rapidly advancing due to government support and declining
- Solar power in JamaicaJamaica's electricity sector is dominated by non-renewable generators that use petroleum p
- Solar power in New ZealandSolar power in New Zealand is a small but rapidly growing contributor to the country's ele
- Solar power in Saudi ArabiaSolar power in Saudi Arabia has become more important to the country as oil prices have ri
- Solar power in South DakotaSolar power in South Dakota has high potential but little practical application. The state
- Solar power in TennesseeOverview of solar power in the U.S. state of Tennessee
- Solar power in TurkeySolar power suits Turkey's climate, especially in the South Eastern Anatolia and Mediterra
- Solar power in UtahThe U.S. state of Utah has the solar potential to provide all of the electricity used in t
- Solar power in VermontOverview of solar power in the U.S. state of Vermont
- Solar power in VirginiaSolar power in Virginia on rooftops is estimated to be capable of providing 32.4% of elect
- Solar power in Washington (state)As of the first quarter of 2023, Washington State has 604 MW of solar power electricity ge
- Solar power in Washington, D.C.Solar energy in the District of Columbia, United States
- Solar power in West VirginiaElectricity from sunlight in one U.S. state
- Solar power in WisconsinOverview of solar power in the U.S. state of Wisconsin
- Solar power in WyomingWyoming Solar Power
- Solar StarPhotovoltaic power station in California
- Solar thermal collectorDevice that collects heat
- Solar vehicleElectric vehicle powered by solar energy
- SolectracAmerican electric tractor manufacturer
- Solid Waste Disposal Act of 1965The Solid Waste Disposal Act (SWDA) is an act passed by the United States Congress in 1965
- Solid waste policy of the United StatesSolid waste policy in the United States is aimed at developing and implementing proper mec
- SomanChemical compound (nerve agent)
- Somerset Wind FarmThe Somerset Wind Farm is a wind farm in Somerset County, Pennsylvania with six GE 1.5 MW
- Sono Motors SionMotor vehicle
- SoundproofingMethods to reduce sound pressure
- Source reductionApproach to pollution prevention
- South Africa and weapons of mass destructionFrom the 1960s to the 1990s, South Africa pursued research into weapons of mass destructio
- South African National Conference on Environment and DevelopmentThe first National Conference on Environment and Development in South Africa was held at t
- South Atlantic Peace and Cooperation ZoneOrganization
- South Korea and weapons of mass destructionThe United States stationed various nuclear weapons and their delivery systems in South Ko
- Southeast Asian Nuclear-Weapon-Free Zone Treaty1995 international treaty
- Southeast MichiganSoutheast Michigan, also called southeastern Michigan, is a region in the Lower Peninsula
- Southern Ocean Whale SanctuaryWhale sanctuary in the Southern Ocean
- Southwest Borneo freshwater swamp forestsThe Southwest Borneo freshwater swamp forests ecoregion (WWF ID: IM0153) covers a number d
- Soviet biological weapons programSoviet pathogen weaponization from 1920s to 1990s
- Soviet submarine K-27K-27 was the only nuclear submarine of the Soviet Navy's Project 645. It was constructed b
- Soviet Union and state-sponsored terrorismThe Soviet Union and some communist states have sponsored international terrorism on numer
- Soviet Union and weapons of mass destructionThe Soviet Union had, by 1991, the world's largest stockpiles of nuclear, biological, and
- Space Coast Next Generation Solar Energy CenterPhotovoltaic power plant located in the Kennedy Space Center in Florida
- Space debrisPollution around Earth by defunct artificial objects
- Space sustainabilityActivity aimed at minimising space environmental impact
- Space-Based Infrared SystemThe Space-Based Infrared System (SBIRS) is a United States Space Force system intended to
- Special nuclear materialSpecial nuclear material (SNM) is a term used by the United States Nuclear Regulatory Comm
- Special-interest terrorismSpecial-interest terrorism and single-issue terrorism are forms of terrorism that, unlike
- Species affected by poachingMany species are affected by poaching, including illegal hunting, fishing and capturing of
- Spent fuel poolStorage pools for spent nuclear fuel
- Spent nuclear fuelNuclear fuel that has been irradiated in a nuclear reactor
- Sperm whalingHuman hunting of sperm whales
- Sphingobium chlorophenolicumSphingobium chlorophenolicum is a species of gram-negative bacteria. The type strain was f
- Spin states (d electrons)Potential configurations of electrons
- Spiritual ecologyField in religion, conservation, and academia
- Spring Valley Wind FarmWind farm in Nevada, USA
- Squirrel poachingIllegal hunting of squirrels
- Sri Lanka and state terrorismThe Sri Lankan state has been accused of state terrorism against the Tamil minority as wel
- SS Torrey CanyonOil tanker wrecked off the coast of Cornwall
- SSE RenewablesSSE Renewables is a renewable energy subsidiary of SSE plc, which develops and operates on
- Stabbing as a terrorist tacticTerrorist use of knife attacks as a tactic
- Stadial and interstadialPeriods of colder and warmer climate during the Quaternary period
- Stafford, TexasStafford is a city in the U.S. state of Texas, in the Houston–The Woodlands–Sugar Land met
- Stakeholder theoryManagement and ethical theory that considers multiple constituencies
- Stanton MoorStanton Moor is a small upland area in the Derbyshire Peak District of central northern En
- Star Mountains Rural LLGStar Mountains Rural LLG is a local-level government situated in the Star Mountains in Nor
- Stars virusThe Stars virus is a computer virus which infects computers running Microsoft Windows. It
- START I1991 Soviet Union–United States arms control treaty
- START II1993 nuclear arms reduction treaty between the US and Russia
- Start-1Start-1 is a Russian satellite launch vehicle based on the RT-2PM Topol, a Soviet intercon
- State of the World (book series)Book series published by the Worldwatch Institute
- State terrorismActs of terrorism conducted by a state
- State-sponsored terrorismState support for terrorist activities and/or organizations
- Stateline Wind FarmWind farm in the United States
- Stationary fuel-cell applicationsStationary fuel-cell applications (or stationary fuel-cell power systems) are applications
- Steal This Book1971 book by Abbie Hoffman
- Steel industry in ChinaOverview of the steel industry of China
- Steering taxTax that aims to change behavior
- Stephen Blair HedgesStephen Blair Hedges (known as S. Blair Hedges) is Laura H. Carnell Professor of Science a
- Stephenson GlacierStephenson Glacier (53°6′S 73°42′E / 53.100°S 73.700°E) is a glacier close west of Dovers
- Stewardship (theology)Divine belief in one's responsibility for the world
- Stillwater Triple Hybrid Power PlantThe Stillwater GeoSolar Hybrid Plant is a combined 61 MW solar energy and geothermal power
- Stillwater, NevadaStillwater is a 19th-century ghost town of Churchill County, Nevada. Stillwater became the
- Stochastic terrorismProbabilistic link between public rhetoric and ideologically motivated violence
- Stock tankSee Stock tank oil for oil industry stock tank definition.
- Stockholm Convention on Persistent Organic PollutantsInternational environmental treaty
- Strategic Arms Limitation TalksTwo conferences between the United States and Soviet Union involving arms control
- Strategic nuclear weaponNuclear weapons used on strategic targets outside of battlefields
- Strategic Offensive Reductions Treaty2002 nuclear disarmament treaty between the U.S. and Russia
- Strategic sustainable investingInvestment strategy
- Stray voltageElectrical potential between unexpected places
- Strontium-89Strontium-89 (89Sr) is a radioactive isotope of strontium produced by nuclear fission, wit
- Strontium-90Radioactive isotope of strontium
- StyreneChemical compound
- Substance of very high concernChemical substance that is hazardous to humans or the environment
- SubvertisingParody advertising
- Suffragette bombing and arson campaign1912–14 campaign orchestrated by British suffragettes
- SulfoxaflorSystemic insecticide and neurotoxin
- Sulfur waterWater exposed to hydrogen sulfide gas
- Sultan of Selangor's CupThe Sultan of Selangor's Cup is an annual friendly football competition organized by the F
- SunEdisonSunEdison, Inc. (formerly MEMC Electronic Materials) is a renewable energy company headqua
- Sunita NarainIndian environmentalist
- Surface runoffFlow of excess rainwater not infiltrating in the ground over its surface
- Sustainability accountingConcept in financial accounting
- Sustainability Accounting Standards BoardNon-profit accounting standards organization
- Sustainability measurementQuantitbasis for the informed management of sustainability
- Sustainability organizationOrganization aiming to advance sustainability
- Sustainability reportingReporting about ESG sustainability
- Sustainability scienceResearch field studying sustainability aspects of human society
- Sustainability standards and certificationVoluntary guidelines to show good practices
- Sustainability studiesField of research
- Sustainable cityCity designed with consideration for social, economic, and environmental impact
- Sustainable consumer behaviourSub-discipline of consumer behavior
- Sustainable consumptionStudy of resource and energy use
- Sustainable designEnvironmentally conscious design
- Sustainable Development Goal 6Global goal to achieve clean water and sanitation for all people by 2030
- Sustainable Development Strategy in CanadaSustainable Development in Canada
- Sustainable electronicsSustainable electronics are electronic products made with no toxic chemicals, recyclable p
- Sustainable engineeringEngineering discipline
- Sustainable fashionReduction of environmental impacts of the fashion industry
- Sustainable forest managementSustainable forest management (SFM) is the management of forests according to the principl
- Sustainable Forestry InitiativeNorth American forest certification standard
- Sustainable huntingSustainable hunting is a conservation-based hunting approach that does not reduce the dens
- Sustainable landscapingLow maintenance landscaping
- Sustainable livingLifestyle
- Sustainable marketsSustainable exchange of goods and services
- Sustainable packagingPackaging that results in improved sustainability
- Sustainable yieldMaximum harvest without causing damage
- Sverdlovsk anthrax leak1979 anthrax outbreak in the Soviet Union
- Swan doorsSwan doors or swan-wing doors are a type of door on performance cars or concept cars. Swan
- Sweden National Renewable Energy Action PlanThe Sweden National Renewable Energy Action Plan is the National Renewable Energy Action P
- Switzerland and weapons of mass destructionSwitzerland made detailed plans to acquire and test nuclear weapons during the Cold War. L
- Sydenham (New Zealand electorate)Sydenham was a New Zealand parliamentary electorate, from 1881 to 1890 and again from 1946
- Syria and weapons of mass destructionBa'athist Syria researched, manufactured, stockpiled, and used chemical weapons, and pursu
- Syrian chemical weapons programSyria's chemical weapons program began in the 1970s with weapons and training from Egypt a
- Systems ecologyHolistic approach to the study of ecological systems
- Systems geologySystems geology emphasizes the nature of geology as a system – that is, as a set of intera
