News Wires, White Papers, and Books
- Legislation, State and Local Water
- Legislative Environment
- Leloir, Luis
- Leonov, Alexei
- Leopold, Luna
- Lewis Structures
- Lewis, Meriwether and William Clark
- Ley, Willy
- Life Cycle, Human
- Life Cycles
- Life History Strategies
- Life in a Martian Meteorite
- Life in Extreme Water Environments
- Life in the Universe, Search for
- Life in Water
- Life, What Is
- Light Microscopy
- Light Transmission in the Ocean
- Lightsails
- Limnologist