1. Ask a question about biochemical cycles and environmental change
2. Do you think that environmental change is occurring naturally as part of a cycle or do you think that humans are negatively affecting the planet?
3. Report a "hot news item" - something about biogeochemical cycles, carbon cycles, human interference in cycles, eons of change, fossil fuels, or other topics related to biochemical cycles and environmental changes over long periods of time in the news this year or last year.