Week 8, Life in the universe
- Lecture 4.01: Introduction to life
- Lecture 4.02: Photosynthesis
- Lecture 4.03: Water
- Lecture 4.04: Alternative energy sources
- Lecture 4.05: History of life on Earth
- Lecture 4.06: Mars -- the Viking experiment
- Lecture 4.07: Mars -- Microbial hitchhikers
- Lecture 4.08: Mars -- methane?
- Lecture 4.09: Mars -- Methane !! (?!)
- Lecture 4.10: Mars -- a habitable environment
Lecure 4.01: Introduction to life
- There are many interesting musings (some useful, some less so) about "What is life?". Try here for what I think of as a very balanced approach.
- An interesting in depth discussion from Carl Sagan is here
- A smorgasbord of opinions is here
Lecture 4.02: Photosynthesis
- There is much much much to learn about photosynthesis. A good start is Wikipedia, though, as often happens, the article jumps into detail before the basics. Skip down some and read about the basics.
- From there go to cellular respiration and from there, go crazy
Lecture water 4.03: Water
- Read up on polar molecules and how they hydrogen bond
- A nice little article on the properties of water
Lecture 4.04: Alternative energy sources
- Archaea are a fascinating group of microbes. You can start here and read about methanogens (which are only one of many types of archaea!)
- Chemosynthesis, in general, is covered here
Lecture 4.05: The history of life
- This Wikipedia article on the history of the Earth is actually quite nice (though, like many Wikipedia articles, it occasionally takes a single paper which says something controversial and cites it as the gospel truth).
Lecture 4.06: Viking
- A nice discussion of the details of the Viking experiments
- And a modern update
- And, of course, wikipedia
Lecture 4.08: Methane on Mars
Lecture 4.09: Habitable on Mars