1. A market-based trading scheme for rights to emit greenhouse gasses that contribute to global warming
   - emission trading scheme

Encyclopedia: ETS

• lysozyme
• lyssa
• lyssavirus
• Lythraceae
• Lythrum
• Lythrum hyssopifolia
• Lythrum salicaria
• Lytton
• Lytton Strachey
• Léopoldville
• m
• M-1
• M-1 rifle
• M-theory
• M. J. Schleiden
• M2
• M3
• ma
• ma'am
• Maalox
• maar
• Maarianhamina
• maas
• mac
• macabre