Here is a list of some broad themes that you might consider writing a paper on. Of course you will need to narrow the focus quite a bit for your paper and presentation. We present this list to you merely as a place to start when trying to choose a topic. You are also welcome to choose a topic of your own as long as it falls under the very broad envelope of Geobiology!

• Geologic Evidence for the Origin of Life
• Theories for the Origin of Life
• Evidence for Panspermia
• Probability of Life Existing Elsewhere in the Universe
• Is a Rocky Planet Essential for Habitation?
• Cosmic Influences on Planetary Habitability
• Recent Challenges to the 'Snowball Earth Hypothesis'
• The History of Atmospheric Oxygen
• The Redox History of the Ocean
• Stromatolites: Ancient and Contemporary
• Defining the 'Habitable Zone'
• Vascular Plant Influence on Geology, Carbon Cycle and Climate
• Geological Evidence for the Radiation of Algae
• Water on Mars
• The Importance of Oxygenic Photosynthesis as a Biogeochemical Process
• The Importance of Methanogenesis as a Biogeochemical Process
• The Importance of Sulfate Reduction as a Biogeochemical Process
• Isotopic Biosignatures
• Molecular Biosignatures
• Cambrian Radiation of Animals