User:Wavelength/Articles userfied/List of environmental topics/M

M

The items listed on this page form part of the multi-page list of environment topics.

This is a list of topics related (in whole or in part) to (a) phenomena in the natural environment which have a definite or significantly possible connection with human activity or (b) features of human activity which have a definite or significantly possible connection with the natural environment, even if the connection is made indirectly through the built environment. For example, hamster has been included because the effect on the built environment can affect the natural environment. Also, factory farming (often practiced indoors) has been associated with epidemics, which do not stay indoors.

The connections can be positive (even remedial) or negative or both. Some introduced species intended to benefit the ecosystem have acted as invasive species, damaging the ecosystem. Also, different sources of energy development have both pros and cons. Furthermore, an environmental topic can be such for multiple reasons at one time, as in the case of resource extraction and processing; commodity distribution, use, and misuse; and waste management.

M-Mac

Maasai (Masai) (a semi-nomadic people in Africa)
macadam (a type of road construction)
The MacDiarmid Institute for Advanced Materials and Nanotechnology (the MacDiarmid Institute) (in New Zealand)
Mach number (Ma)
machine
(machine reproduction: see) clanking replicator
Mackenzie Valley Pipeline Inquiry (in Canada)
MacRitchie Reservoir (in Singapore)
macro-engineering (macroengineering) (macro engineering)
macroecology
macroinvertebrate
(macromolecular chemistry) polymer chemistry
macrosonics

Mad-Maf

(mad cow disease) bovine spongiform encephalopathy (BSE)
Madagascar lowland forests
Madagascar subhumid forests
Madeira Wind Birds (eco-tourism company)
Madrean pine-oak woodlands
Madrean sky islands
maelstrom

Mag

Magellanic subpolar forests
Magnaporthe grisea (rice blast fungus)
magnet (see under North/South Pole designation and the Earth's magnetic field)
magnetic fusion energy (MFE)
magnetic polarity reversal
magnetic refrigeration
magnetic resonance imaging (MRI) (magnetic resonance tomography [MRT])
magnetic sail (magsail)
magnetic storm (geomagnetic storm)
magnetic weapon
magnetism (see under Nano-Structured Magnets)
magnetite
Magnetohydrodynamic drive (MHD propulsor)
(magnetohydrodynamic generator) MHD generator (MHD dynamo)
magnetohydrodynamics (MHD)
magnetometer
magnetopause
magnetosheath
magnetosphere (see also list of satellites which have provided data on the magnetosphere)
magnetostriction
magnox (obsolete type of nuclear power reactor)

Mah-Mak

Maharashtra Pollution Control Board (in India)
(maidenhair tree) ginkgo ("a unique tree with no living relatives")
mail rocket
mailbomb (mail bomb) (parcel bomb) (letter bomb)
mains electricity
mains hum (electric hum)
(mains plugs: see) domestic AC power plugs and sockets
maize (corn) ("widely cultivated throughout the world")
major coal producing regions
major stationary source
major submarine incidents since 2000
Makara Peak Mountain Bike Park (in New Zealand)

Mal-Mam

Malabar Coast moist forests
(Malagasy rats and mice) Nesomyinae
malaria
malaria and the Caribbean
malarial parasite
Malawian food crisis
(Malayan Nature Society [Singapore Branch]: renamed) Nature Society (Singapore)
Malaysian Nature Society
Mallet locomotive
Malthusian catastrophe (Malthusian check)
Malthusianism
mammal
mammoth
Mammoth Cave National Park (in Kentucky)
(Mammoth Hot Springs: see) geothermal areas of Yellowstone
Mammoth Mountain (in California)
Mammoth Spring (in Arkansas)

Man

man-eating tree
(man-made diamond) synthetic diamond
(man-made disaster: see) Category:Man-made disasters
(man-made disease: see) bioterrorism
(man-made island) artificial island
(man-made lake: see) reservoir (water)
(managed lanes: see) high-occupancy vehicle (HOV)
management systems for road safety
Managing Urban America (book)
Manantali Dam (in Mali)
Manapouri Power Station (in New Zealand)
Manas National Park (in India)
(Manchester air disaster: see) British Airtours Flight 22M
Manchester Ship Canal (MSC) (in the UK)
Manchukuo and Mengchiang (agriculture, farming, lumber and fishing)
mandatory labelling
Mandla Plant Fossils National Park (in India)
mandrake (plant) (see under Anæsthesia)
mangrove (soil retainer, wildlife habitat, windbreak, breakwater) (see also list of mangrove ecoregions)
Manhattan Project (Manhattan Engineering District)
manhole (maintenance hole)
manhole cover
manhole cover theft
Manifesto for a Sustainable Society
Manila hemp (manilla) (type of fiber)
Manila paper
(manioc) cassava (see under Uses and under Cassava pests)
(Manistee National Forest: see) Huron-Manistee National Forests (in Michigan)
Manitoulin Island (in Ontario)
Manned Orbiting Laboratory (MOL)
(Manned Space Programs: see) list of human spaceflights by program
(Manned Spacecraft Center: see) Lyndon B. Johnson Space Center ("JSC") (see also list of manned spacecraft)
(manned spaceflight) human spaceflight

(see also list of manned spaceflights to the ISS [ISS = International Space Station])

manometer
manta ray (giant manta) (Atlantic manta) (Pacific manta) (devil ray) (devilfish) (manta)
mantle (geology)
mantle plume
(manufactured diamond) synthetic diamond
(manufactured gas) town gas
manufactured housing (prefab housing)
manufacturing
(Manufacturing Belt) Rust Belt (in the US)
manufacturing resource planning (MRP II)
(manufacturing waste) industrial waste
manure

Mao-Maq

(Maori wrasse) humphead wrasse (endangered fish)
map
maple (source of wood and syrup for humans, and of pollen and nectar for bees)
maple bug (boxelder bug)
Maquila Decree
maquiladora (maquila) ("health and environmental problems have arisen")
Maquila Solidarity Network (MSN)
Maquis shrubland

Mar-Marh

Marathon Ashland Petroleum (from 2005-09-01, Marathon Petroleum Company)
Marathon Oil Corporation
Marble Bar, Western Australia ("believed by some to be the world's hottest place")
Marburg virus
March 2006 Tornado Outbreak Sequence
March 2007 floods in the Argentine littoral
March 2007 Sumatra earthquakes (in Indonesia)
March of the Penguins (documentary)
Marchioness disaster
(Marconi's Wireless Telegraph Company: see) Guglielmo Marconi
Marek's disease (in chickens)
marginal propensity to consume (MPC)
marginal propensity to save (MPS)
marginal sea

Mari-Marim

Marie Curie (Maria Sklodowska-Curie) (chemist and pioneer in radiology)
(marijuana: see) cannabis (drug) (listed because of environmental effects of cultivation)

Marin-Marind

marina
Marina Beach (in India)

Marine - Marine m

marine aquarium
(marine aquarium fish species: see) list of marine aquarium fish species
marine biology
(Marine Biology Simulation Case Study [MBSCS]: see) Advanced Placement Computer Science#Marine Biology Case Study
marine biomolecule
marine clay
marine conservation
(marine dead zone: see) dead zone
marine debris
(Marine Dumping: see) Convention on the Prevention of Marine Pollution by Dumping Wastes and Other Matter
(marine ecology: see) marine biology
marine ecoregion
marine engineering
(marine farming: see) aquaculture
(marine geology: see) oceanography
(marine life: see) marine biology
(Marine Life Conservation: see) Convention on Fishing and Conservation of Living Resources of the High Seas
marine life of New York Harbor
marine mammal
Marine Modeling and Analysis Branch (MMAB) (in the US)

Marine n - Marine z

Marine Nature Reserve (MNR) (in the UK)
marine park
marine pollution
Marine Protected Area
(Marine Protected Areas of the United States: see) National Marine Protected Areas Initiative
(marine reptile: see) list of marine reptiles
marine reserve
marine reserves of New Zealand
marine science
(marine slip) slipway (boat skip) (slip)
marine snow
(marine transport: see) ship transport
(marine west coast climate: see) oceanic climate (maritime climate)
(Marine World: renamed) (Marine World Africa USA: renamed) (Marine World Theme Park: renamed) Six Flags Marine World (in California)
marine worm
Marine Worm Harvester
(marine zoology: see) marine biology

Marinea-Marizzz

Marineland
(maritime: see) sea
Maritime archaeology
(maritime climate) oceanic climate (marine west coast climate)
maritime geography
maritime terrorism
(maritime transport: see) ship transport

Marj-Marr

Mark 117 bomb
Mark 118 bomb
Markermeer (in the Netherlands)
(Markerwaarddijk: see) Zuiderzee Works
market garden
market gardening
Marmaray (tunnel under the Bosporus) (in Turkey) ("to be finished in 2010")
marmoset (member of one of several species of monkeys)
marmot (member of one of several species of rodents)
Marquesas botany
Marquesas zoology
Marquis reagent

Mars

Mars Climate Orbiter
(Mars colonization) colonization of Mars
Mars Desert Research Station (MDRS)
(Mars Direct: see) The Case For Mars: The Plan to Settle the Red Planet and Why We Must (book)
(Mars exploration) exploration of Mars
Mars Exploration Rover (MER)
Mars Express
Mars Express Orbiter
Mars Global Surveyor (MGS)
Mars Gravity Biosatellite
Mars Habitat Unit
(Mars meteorite) Martian meteorite
Mars Observer
(Mars Odyssey: see) 2001 Mars Odyssey
Mars Pathfinder
(Mars Phoenix: see) Phoenix (spacecraft)
Mars Polar Lander
Mars probe program
Mars Radiation Environment Experiment (Martian Radiation Experiment) (MARIE)
Mars Reconnaissance Orbiter (MRO)
Mars Rover
(Mars Sample Return: see) exploration of Mars
Mars Science Laboratory (or MSL)
Mars Society
Mars Surveyor
Mars Telecommunications Orbiter
marsh
(marsh gas: see) natural gas
Marsh test (for detecting arsenic)
(marshalling yard) classification yard
marsupial

Mart-Marz

(Martinique Giant Rice Rat: see) Antillean Giant Rice Rat
Marwell Zoological Park
Maryland Conservation Council (MCC)

Mas

(mass burial: see) mass grave
mass concentration (mascon )
mass deacidification (of paper in old books)
mass decontamination (mass decon)
mass grave
mass production
Mass Rapid Transit
Mass Rapid Transit (Singapore) (MRT)
(Mass Rapid Transit [Taipei]: see) Taipei Rapid Transit System (TRTS)
(Mass Rapid Transit Authority of Thailand [MRTA]: see) Bangkok Metro
mass spectrometry
(mass transit) Public transport (public transportation) (public transit)
mass transit in Bucharest
mass transit in Chicago
mass transit in New York City
(Mass Transit Railway) MTR (in Hong Kong)
(Mass Transit Railway Corporation Limited) MTR Corporation Limited (MTRC) (in Hong Kong)
(mass transportation) public transport (public transportation) (public transit) (mass transit)
mass wasting (in geology)
(mass-energy equation) E=mc²
Massachusetts Bay Transportation Authority (MBTA)
Massachusetts Water Resources Authority (MWRA)
Massasauga Rattlesnake (threatened)
(massic energy: see) energies per unit mass
(master-planned community: see) new town
mastodon

Mat

Mata Atlântica (in Brazil) ("contains a large number of highly endangered species")
material
material safety data sheet (MSDS)
Materials Recovery Facility (MRF)
Materials Research Science and Engineering Centers (MRSEC)
materials science
mathematical biology (biomathematics)
mathematical chemistry
mathematical physics
Matheson Fire (in Canada)
(Matilda Highway) Landsborough Highway (in Australia)
mating
mating pool
(mating season: see) estrus cycle (estrous cycle)
mating system
Matobo National Park (in Zimbabwe)
matorral (shrubland)
Matsumoto incident (in Japan)
(matter-energy relation: see) E=mc²
Matthews Range (Mathews Range) (Lenkiyio Hills) (in Kenya)

Mau-Maz

Maui Ocean Center (in Hawaii)
Maui gas field (in New Zealand)
Mauna Kea (in Hawaii)
Mauna Kea Observatory
Mauna Loa (in Hawaii)
Mauna Loa Observatory (MLO)
Mauna Loa Solar Observatory (MLSO)
Max Planck (Max Karl Ernst Ludwig Planck) (physicist)
(Max Planck Institute) Max-Planck-Gesellschaft
Max Planck Institute for Bioinorganic Chemistry
Max Planck Institute for Biophysical Chemistry
Max Planck Institute of Biochemistry
maximum sustainable yield (MSY) (in fisheries science)
(Maxwell's theory of electromagnetism: see) electromagnetism
May 1965 Tornado Outbreak Sequence
May 1995 tornado outbreak sequence
May 2003 Tornado Outbreak Sequence
May 2006 Java earthquake (near Yogyakarta)
May 2007 Tornado Outbreak
May 22, 1981 Tornado Outbreak
May 8th 1995 Louisiana Flood
(May bug) cockchafer ("pest")
Mayani bird sanctuary (in India)
Mazon Creek fossils (near Chicago)

Mb-Md

(McCormick reaper: see) Mazon Creek fossils
McDonald's (see under Criticism)

Me-Mea

mealworm ("food source" for "pets")
(mealworm beetle: see) darkling beetle
mealybug (pest)
mean flow
mean high water springs
mean Radiant Temperature (MRT)
(mean sea level MSL: see) sea level
(mean solar time: see) solar time
(mean tropical year: see) tropical year
means of production
means of protection
measurement
(Measurements of Pollution in the Troposphere) MOPITT
measuring instrument
(measuring well-being: see) quality of life
meat (see also list of meat animals)
meat analogue (meat analog)
meat and bone meal (MBM)
(meat industry: see) livestock
Meat Inspection Act
meat packing industry
(meat recovery system: see) advanced meat recovery (AMR)

Meb-Mec

mechanical advantage (MA)
mechanical biological treatment (MBT)
mechanical efficiency
mechanical energy
mechanical engineering
mechanical equivalent of heat
mechanical heat treatment (MHT)
mechanical plant (physical plant)
mechanical work
mechanically separated meat (MSM) (mechanically recovered meat [MRM])
mechanically separated poultry (MSP)
mechanics
mechanised agriculture
mechanochemistry

Med

(median [highway]: see) central reservation
(median strip: see) central reservation
mediation (biology)
medical geology
medical cannabis
(medical nanorobotics: see) nanomedicine
(medical nanotechnology: see) nanomedicine
medical tourism
medical waste
Medical Waste Tracking Act
medicinal chemistry
medicinal leech
(medicinal plant: see) botany
medicinal tea
medieval hunting
Medieval Warm Period (MWP) (Medieval Climate Optimum) (Medieval Climatic Anomaly)
Mediterranean Basin
Mediterranean climate
Mediterranean forests, woodlands, and shrub
Mediterranean Monk Seal ("endangered")
Mediterranean recluse spider (introduced to the US)
mediterranean sea (in oceanography)
Mediterranean Sea
(medium earth orbit [MEO]: see) intermediate circular orbit (ICO)
medium-density fibreboard (MDF) ("use of formaldehyde resins")

Mee-Mek

Mel-Meq

melting
melting point
melting points of the elements (data page)
(member [geology]: see) stratum
Memphis Area Transit Authority (MATA)
(Mendel: see) Gregor Mendel ("father of genetics")
Mendel University of Agriculture and Forestry Brno (in the Czech Republic)
(Mendeleev: see) Dmitri Mendeleyev (Russian chemist)
(Mendeleev periodic table) periodic table
Mendeleev's predicted elements
meningitis (see under Causative organisms)

Mer

Mer Bleue Conservation Area (in Ontario, Canada)
Mercator projection
merchandization
mercury (element) (see under Health and Environmental Effects)
mercury-in-glass thermometer
mercury-vapor lamp
Mercy Mercy Me (The Ecology) (song)
meridian
Meridian Energy Limited (in New Zealand)
Merlin diamond mine (in Australia)
Merritt Island National Wildlife Refuge (in Florida in the US)
(Meru [volvano]: see) Mount Meru (Tanzania) ("active volcano")

Mes

mesa (in geology)
Mesker Park Zoo (in Indiana in the US)
(mesopause: see) mesosphere
(mesopelagic zone: part of) pelagic zone
mesosphere
(mesospheric cloud: see) noctilucent cloud
mesothermal (in climatology)

Met-Metd

Met Office (previously Meteorological Office) (the UK's national weather service)
metabolic theory of ecology
metagenomics (environmental genomics) (community genomics)
(metal active gas [MAG] welding: see) gas metal arc welding (GMAW) (metal inert gas [MIG] welding) (see especially under Safety)
metal foam
metal fume fever
metal halide lamp (containg mercury and metals)
metallurgical engineering
Metallurgical Laboratory (site of the first self-sustaining nuclear reaction)
metallurgy
metalworking
metamaterial (in electromagnetism)
metamorphism (in geology)
metamorphosis (biology)
Metapneumovirus
metapopulation
metastasis
metavolcanic rock

Mete

meteor (shooting star) (falling star)
Meteor Crater (Barringer Crater) (in Arizona in the US)
(meteor impact: see) impact event
meteor shower (see also list of meteor showers)
meteorite
(meteorite crater: see) impact crater (impact basin) (crater)
(meteorite impact: see) impact event
meteorites classification
Meteoritical Society
meteoritics
meteoroid
meteorological history of Hurricane Katrina
(Meteorological Office: renamed) Met Office (the UK's national weather service)
meteorological phenomenon (see also list of meteorological phenomena)
(meteorological satellite) weather satellite
Meteorological Service of Canada (MSC)
meteorology (see also list of meteorology topics)

Metf-Metq

methamphetamine (see under Production)
methane
methanogen
methanogenesis
methanol
(methanol car: see) liquid fuels
methanol chemdata supplement
methanol economy
(methanol fuel: see) liquid fuels
(methanol fuel cell: see) direct-methanol fuel cell (DMFC)
Methicillin-resistant Staphylococcus aureus (MRSA) ("superbug")

Metr

metric system
metric system in the United States
metrication (metrification)
(metro: see) rapid transit
Metro Toronto and Area Conservation Authority (MTACA)
Metrobus
Metrology
metropolis
metropolitan area (see also)
Metropolitan Transit
(Metropolitan Transit Authority) MTA
Metropolitan Transit Authority of Harris County, Texas (METRO)
(Metropolitan Transit Authority of New York City: see) New York City Transit Authority (NYCTA) (NYCT) (the TA)
Metropolitan Transit Commission
(Metropolitan Transportation Agency [MTA]: see) Agence métropolitaine de transport (AMT)
Metropolitan Transportation Authority (New York)
Metropolitan Transportation Commission (San Francisco)
Metropolitan Travel Survey Archive
Metropolitan Water District of Southern California

Mets-Metz

Meu-Mez

(Meudon Observatory: see) Paris Observatory (Observatoire de Paris) (Observatoire de Paris-Meudon)
Mexican Free-tailed Bat (very important for pest control) (see paragraph 5)
Mexican Wolf (conservation status: critical [Wikipedia's term]; critically endangered [IUCN's term] [CR])
Mexico City (see under Urban Problems)

Mf-Mh

Mi-Mib

Mic-Micq

Michael Faraday (a British scientist--a physicist and chemist)
Michigan left (Michigan left turn) (Superstreet)

Micr

(micro [transport]: see) public transport in Lima
Micro Air Vehicle (MAV)
(Micro Combined Heat and Power) MicroCHP
(Micro Electro-Mechanical Systems) MEMS
(micro-hydropower: see) hydropower (see under Small scale hydro power)
(microballoon) glass microsphere
microbial ecology
microbial fuel cell (biological fuel cell)
microbicide
microbiology
microbolometer (for measuring electromagnetic radiation)
microcar
microchip (animal identification)
microclimate
microorganism (microbe)
(micropower broadcasting) low-power broadcasting (microbroadcasting)
microelectronics
microfiber
microfiltration
(microgravity: see) weightlessness
microgravity environment
(microhabitat: see) habitat (ecology)
micromachinery
microscope
microsound
microspacecraft
Microtechnology
(microturbine: see) gas turbine (see under Micro turbines)
microwave (radiation)
microwave auditory effect ("Frey effect")
(microwave background radiation: see) cosmic microwave background radiation (CMB)
microwave chemistry
microwave effect
(microwave laser: see) maser
microwave oven (see under Safety and controversy)
microwave plasma
microwave power meter
microwave power transmission (MPT)
microwaving

Mics-Micz

Mid-Mik

Mid-Atlantic Ridge
Mid-Atlantic United States flood of 2006
Mid-Continent Oil Province (in the US)
mid-December 2007 eastern Canada winter storm
mid-December 2007 North American Winter storms (in North America)
Mid-InfraRed Technologies for Health and the Environment (MIRTHE) (largely based at Princeton University in the US)
mid-June 1992 Tornado Outbreak (in the US)
Mid-Mississippi Valley Tornado Outbreak of March 1890 (in the US)
mid-November 2005 Tornado Outbreak (in the US)
mid-November 2006 tornado outbreak (in the US)
mid-ocean ridge (mid-oceanic ridge)
mid-October 2007 Tornado Outbreak
mid-size car
midden (kitchen midden)
middle latitudes
midnight
(migrating birds: see) bird migration
migration
Migratory Bird Treaty Act of 1918
migratory locust

Mil

Milan Transportation System (in Italy)
Milankovitch cycles (in climatology)
Millau Viaduct (le Viaduc de Millau) (in France) ("the tallest vehicular bridge in the world")
mildew ("a grey, mold-like growth")
mile-a-minute weed (Devil's tail tearthumb) (Asiatic tearthumb)
militarisation of space
militarism
military
military animals
military dolphin
Military Geology Unit
milk
(milkweed) Asclepias
mill town
Millennium Development Goals (by the UN) (see under Ensure environmental sustainability)
Millennium Ecosystem Assessment (MA)
miller
Miller cycle (in engine design)
(milliequivalent: see) equivalent (chemistry)
milligram per litre (milligram per liter) (mg/L)
millimeter cloud radar (millimeter wave cloud radar) (MMCR)
(millimeter of mercury [mmHg]) torr (unit of pressure)
millstone
Milne Ice Shelf
(milo maize: see) sorghum ("drought tolerant and heat tolerant")

Mim

Min-Minh

Minamata, Kumamoto (in Japan) (see under Minamata environmental disaster)
Minamata disease ("a neurological syndrome caused by severe mercury poisoning")
(mine: see) mining
(Mine Ban Treaty) Ottawa Treaty (Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction)
mine closure
mine closure planning
(mine explosion: see) mining accidents
mine fire
mine plow (military)
mine reclamation
mine roller (military)
Mine Safety and Health Administration (MSHA) (in the US)
(minefield: see) landmine
(Miner's Safety Lamp) Davy lamp
mineral
(mineral fuel) fossil fuel
mineral oil
mineralogy
(miners' anaemia: see) hookworm
minesweeper (ship)
Mingan Archipelago National Park Reserve (in Quebec)

Mini-Minir

miniaturized satellite
mining (see also list of mining companies)
mining accident (see also list of mining disasters in Poland)
Mining Act of 1872 (in the US)
mining engineering
mining in Limburg
Mining the Sky: Untold Riches from the Asteroids, Comets, and Planets (book)
(minipark: see) pocket park
minipreparation (miniprep) ("one lab application of this ... [involves] ... antibiotic resistance")

Minis

minisatellite
Minister for Transport
Minister of Agriculture
Minister of Agriculture (Canada)
Minister of Agriculture, Fisheries and Food
Minister of Agriculture, Forestry and Fisheries (Japan)
Minister of Energy, Mines and Resources (Canada)
Minister of Fisheries and Oceans (in Canada)
Minister of Land, Infrastructure and Transport (Japan)
Minister of Natural Resources (Canada)
Minister of Public Safety and Emergency Preparedness (in Canada)
Minister of Railways and Canals (Canada)
(Minister of the Environment: see) list of ministers of the environment
Minister of the Environment (Canada)
Minister of the Environment (Japan)
Minister responsible for the Canadian Wheat Board
Ministry for Atomic Energy (Russian Federation)
Ministry for the Environment (in New Zealand)
Ministry of Agriculture
Ministry of Agriculture, Food and Rural Affairs (Ontario)
(Ministry of Agriculture and Forestry [in New Zealand]: see) New Zealand Ministry of Agriculture and Forestry
Ministry of Agriculture, Fisheries and Food (in the UK)
Ministry of Agriculture, Forestry and Fisheries (Japan)
Ministry of Energy (Ontario)
Ministry of Extraordinary Situations (Russian Federation) (EMERCOM) (Ministry of the Russian Federation for Civil Defense, Emergencies and the Elimination of the Consequences of Natural Disasters)
Ministry of Land, Infrastructure and Transport (Japan)
Ministry of Natural Resources (Ontario)
Ministry of Northern Development and Mines (Ontario)
Ministry of the Environment (Japan)
Ministry of the Environment (Ontario)
Ministry of Transportation (Ontario)

Minj-Minz

Mio-Mir

Mir Space Station (see under Names)
Miracle Planet (five-part documentary series)

Mis

miscellaneous topics on cities and population
(misdirected lighting: see) light pollution (photopollution) (luminous pollution)
mission blue butterfly habitat conservation
Mississippi Alluvial Plain
Mississippi Delta
Mississippi River (see under Watershed)
Mississippi River-Gulf Outlet Canal
(Missouri Plateau: see) Coteau du Missouri
Missouri River
(Missouri River Basin Project: renamed) Pick-Sloan Missouri Basin Program
Missouri River Trench
mist
(Misti Volcano) El Misti (in Peru)

Mit-Miz

Mj-Mn

MnDOT traffic cameras

Mo-Moi

(mobile garbage bin) wheelie bin
mobile phone (see under Environmental impacts)
mobile phone radiation and health
mobile phones on aircraft
(mobile power: see) power
Mobility 2030
mode of transport
(moderator: one meaning selected from disambiguation page)
- neutron moderator
modified atmosphere (of packages) (see under Packaging Films)
(Mohave Desert) Mojave Desert
Mohring effect (in public transit systems)
(moist adiabatic lapse rate: see) adiabatic lapse rate (in meteorology)
(moist grain crimping) grain crimping
moisture
(moisture in the soil) soil moisture
moisture ratio

Moj-Mom

Mojave Desert (Mohave Desert)
Mojave Freeway (previous name: Barstow Freeway)
Mojave National Preserve
Mojave Spaceport (Mojave Airport and Civilian Flight Test Center)
Mojave phone booth (with "environmental impact")
Mojave yucca (see "typically grows" and see under Uses)
mold remediation
molecular biology
molecular ecology
molecular engineering
molecular nanotechnology (MNT)
molten salt reactor
Molten Salt Reactor Experiment
molten-carbonate fuel cells (MCFCs)

Mon

Monarch butterfly (see "drastic reduction in ... population")
monetary reform
(monk seal) Monachus
- (Caribbean Monk Seal: "extinct")
- (Hawaiian Monk Seal: "endangered")
- (Mediterranean Monk Seal: "endangered")
monkeypox (virus)
Mono-Inyo Craters (in California)
monoculture (see under Agriculture)
monogenetic volcanic field
monopropellant
monorail
monotreme
Monsanto
Monsanto Canada Inc. v. Schmeiser
Monsanto Insectarium (in St. Louis in Missouri in the US)
(monster wave) freak wave (rogue wave)
montane grasslands and shrublands
(Monte Carlo N-Particle Transport Code) MCNP (in nuclear energy)
Montezuma Marsh (in New York state)
Montezuma National Wildlife Refuge (in New York state)
(Monthly Mumbai Weather: see) weather of Mumbai
Montreal Biodome
(Montreal Botanical Garden) Jardin botanique de Montréal
(Montreal commuter trains: see) Agence métropolitaine de transport (AMT) (Metropolitan Transportation Agency [MTA])
Montreal Insectarium
Montreal Metro (see under Trains: "Rubber tires ... less energy consumption")
Montreal Protocol on Substances That Deplete the Ozone Layer
Monument to the Great Fire of London

Moo-Moq

moon (see under Orbit and under Eclipses: "tides")
moon landing
(moon landing hoax: see) Apollo moon landing hoax accusations (see under Ionizing radiation and Heat)
moon rocks
moonlight
moonquake
Moorgate tube crash (in London, England)
Moorten Botanical Garden and Cactarium (in California)
moose test

Mor-Mos

moral purchasing
moray eel (see "toxin" and "fishery")
morgue (mortuary)
morphodynamics
(mortality rates arising out of the European colonization of the Americas: see) population history of American indigenous peoples (see under Depopulation from disease)
Moscow State Forest University (MSFU)
Moscow Zoo
mosquito (see under Mosquitoes and health)
mosquito net
(mosquito trap: see) bug zapper
moss (see under Cultivation): "considered a weed in grass lawns"

Mot

MOT test (of vehicles) (including "exhaust gases emission test")
moth (see under Economic significance of moths)
mothball
Mother Earth
Mother Earth News
Mother Nature
Mothers Organized to Stop Environmental Sin (MOSES) (based in Texas)
motor
motor oil
motor vehicle
(motor vehicle accident) car accident (traffic accident) (auto accident) (road accident) (road traffic accident)
motorcycle (motorbike) (see under Noise Pollution)
motorway

Mou

mound-building termites
Mount Etna ("active volcano") (in Italy)
Mount Everest (highest mountain on Earth) (between Nepal and Tibet)
Mount Meru (Tanzania) ("active volcano")
Mount Kilimanjaro ("volcano ... active") (in Tanzania)
Mount Pelée ("active volcano ... on ... Martinique in the Caribbean")
Mount Pinatubo ("active volcano ... in the Philippines")
Mount St. Helens ("active stratovolcano") (in the US)
Mount St. Helens National Volcanic Monument
Mount Weather Emergency Operations Center (in Virginia in the US)
mountain (see also list of highest mountains and list of mountains and list of mountain types)
mountain bike (mountain bicycle) (ATB) (All Terrain Bicycle) (see also list of mountain bike areas and trails in the United Kingdom and list of mountain bike trails in Wisconsin)
(mountain building) orogeny
Mountain Gorilla (Gorilla beringei beringei) ("endangered")
mountain pass (see also list of mountain passes and list of mountain passes in Switzerland)
mountain pine beetle
mountain range (see also list of mountain ranges)
mountain rescue
mountain unicycling (MUni)
mountaineering
mouse ("mice can ... be harmful pests")
mousetrap

Mov-Moz

(moving sidewalk) escalator (moving walkway) (slidewalk) (travelator) (travellator) (trav-o-lator) (see under Longest escalators and systems)
mower

Mp-Mt

Mu-Muk

muck (soil) (see "muck farming")
mud
mud dauber (member of one of several species of wasps)
(mud engineer: see) drilling mud
(mud nest builders) Corcoracidae (Corcorachidae?) (member of either of two species of birds)
mud season
mud volcano (mud dome)
mud-terrain tyre
mudbrick
mudflat
mudslide
Mugger Crocodile
muiri tree (an endangered species)

Mul

multi-purpose vehicle (MPV)
(multi-use path: see) segregated cycle facilities
multigenomic organism
multilevel streets in Chicago (see "sewers and proper drainage")
multiple chemical sensitivity (MCS) (20th Century Syndrome) (Environmental illness) (Sick Building Syndrome) (Idiopathic Environmental Intolerance) (IEI)
multiple cropping
(Multiple Mirror Telescope) MMT (in Arizona)
multiple-effect evaporator
multiplex (road) (concurrency)
Multipurpose Laboratory Module (MLM) (for the International Space Station [ISS])

Mum-Mur

(Mumbai floods of 2005) 2005 Maharashtra floods
Mumbai's water sources
Mumbai-Pune Expressway
mummy
municipal solid waste (MSW)
(municipal water supply: see) water supply network
(municipal water system: see) water supply network
(municycling: see) mountain unicycling (MUni)
(munitions dump) ammunition dump (ammunition compound) (ammo dump)

Mus

(Musa textilis) abacá (plant grown for its fiber)
muscazone (toxin)
National Museum of Natural History (France) (Muséum national d'histoire naturelle, MNHN) (the French National Museum of Natural History)
Natural History Museum, Berlin (Museum für Naturkunde, Naturkundemuseum)
Museum of English Rural Life (in Reading, England)
Museum of Garden History (in London, England)
Museum of Natural History ("many ... around the world")
mushroom (see under Chemical properties)
mushroom cloud (from a very large explosion)
(mushroom compost) spent mushroom compost
mushroom hunting (mushrooming)
mushroom poisoning
mushroom rocks (pedestal rocks)
music
music and the brain (see under Music in the Animal Kingdom)
music therapy (musicotherapy)
musical acoustics (music acoustics)
(musical aesthetics) aesthetics of music
musical instrument
musical instrument classification
mustard gas (HD)

Mut-Muz

Mv-Mz

My Inventions: The Autobiography of Nikola Tesla (book)
mycology (the study of fungi)
mycotoxin
Myrmecia (bull ant) (bulldog ant) (see "venom" and "painful sting" in paragraph 2)
myrmecology (the study of ants)