International Maritime Organization (IMO)
International Monetary Fund (IMF)
International Polar Year
Interpol
Intertropical Convergence Zone
Inuit people
Iqaluit, Nunavut Territory
Iran
Iraq
Ireland
Iskut River
Israel
Italy
James Bay and Northern Quebec Agreement
James Bay Project
Japan: and aging populations; and demographic trends; and economic growth models; and Far East Russia; and global warming; and nuclear power; and shifting economic power; and UNCLOS; and water resources; and wind power
Japan Center for Economic Research
Jevons, W. Stanley
Johansen, Lars-Emil
Jordan
Ka-band radar interferometer (KaRIn)
Kalahari Desert
Kamchatka
Karelian people
Kazakhstan
Keeling, Charles
Keeling, Ralph
Keflavik, Iceland
Kenya
Keskitalo, Aili
Keynes, John Maynard
Kiedis, Anthony
Kierans, Tom
Klare, Michael
Kola Peninsula
Korea
Kuptana, Roger
Kuwait
Kyoto Protocol
Kyrgyzstan
La Nina
La Plata basin
Lagos, Nigeria
Lake Maracaibo basin
Lake Mead
Lake Oroville
Lake Powell
Lammers, Richard
land subsidence
Landsat
Lapland
Laporte, Pierre
Laurentide ice sheet
Lawrence, David
Lebanon
Lenin, Vladimir Ilyich
Lesotho
Lettenmaier, Dennis
Libya
liquefied natural gas (LNG)
Lisbon, Portugal
Lobell, Dave
Lockley, Leana
Lomonosov Ridge
Louisiana Purchase
Luzhkov, Yuri
MacDonald, Glen
MacKay, Peter
Mackenzie Gas Project
Mackenzie River
Mae Khlong River
Malaysia
Malthus, Thomas
Manavgat River
Mao Zedong
marker-assisted breeding
market economics
Marshall, John
Martell, Jim
Marx, Karl
Massachusetts Institute of Technology (MIT)
Mauritania
Mayer, Larry
McCain, John
Medvedev, Dmitry
megacities
megadeltas
Meridional Overturning Current (MOC)
Merkel, Angela
methane
Metis people
Metropolitan Water District
Mexico
Middle East
migration of wildlife