Dictionaries, Thesauruses, Pictures, and Press Releases
- maritime climate
- Mark, Herman F.
- marker bed
- marker gene
- marker-assisted selection
- Markgraf (or Marcgraf), Georg
- Markham, Clements Robert
- Markov chain
- Markov, Andrei Andreevich
- Markovnikov, Vladimir Vasilevich
- Marliani, Giovanni
- marlstone
- marlstone
- Marmota marmota
- Marr, David Courtnay
- Marrack, John Richardson
- Mars 96
- Mars Observer
- Mars Surveyor
- Marsdenian