- Lakatos, Imre
- land vertebrates are a small branch
- lander Philae was intrepid
- laser creates a ladder through a Bose-Einstein condensate
- latent variable
- lawfulness is the carrot that keeps science going
- lawn of bacteria
- leading questions
- leaf canopy captures sunshine
- learning impediments
- learning bug
- learning impediment
- learning demand
- learning doctor
- learning impediment
- learning progression
- learning quanta
- learning style
- life claws its way up the tree of life
- lifeworld
- light transmission is like a bird passing through branches
- Lillian McDermott Medal
- lingua-chemica
- lithium is happy to give away an electron
- liver will break down anything it does not like the look of
- lodestone
- lodestone pines away with age
- logic and mathematics are fibres in the body of science
- logic and mathematics are the cement that binds scientific concepts
- longitudinal studies