La Niña
   Model Inadequacies
   Relationship to Extreme Weather
   Relationship to Global Warming
   Relationship to Precipitation

Lakes

Land Cover Change
   Effects on Climate
   Effects on Plants and Animals

Leaves
   Agricultural Species
   Carbon Sequestration
   Other Species
   Respiration
   Trees

Legumes

Life Span
   Animal
   Human
   Plant

Light x CO2 Effects on Plants

Lignin

Lipids

Little Ice Age, continued
   Regional
      Europe
         Central
         Mediterranean
         Northern
      North America
         Alaska
         Canada
         Central America and Mexico
         Conterminous United States
         General
         Greenland
      Oceans
      South America
         Argentina
         Bolivia
         Chile
         Miscellaneous
         Peru
         Venezuela
      Tropics
   Transition to Modern Warm Period

Little Medieval Warm Period

Long-Term Studies
   Non-Woody Plants
   Woody Plants
      General
      Lifetime Exposure to Elevated CO2
      Oak
      Pine
         Loblolly
         Miscellaneous
         Scots
      Sour Orange
      Spruce
      Sweetgum

Low Temperature Tolerance