The Circular Economy and Life Cycle Assessment in Farming Systems

Linear Economy: Follows a "Take-Make-Waste" pattern.
Circular Economy Principles:
- Eliminate waste and pollution.
- Circulate products and materials at their highest value.
- Regenerate nature (land, ocean, and built environment).
Shift in Consumption: Transitioning from buying products to buying services (e.g., car sharing).

For Businesses: Increased profit opportunities, reduced volatility, greater security of supply, and improved customer loyalty.
For Individuals: Increased disposable income, greater utility from goods, and reduced product obsolescence.
Greenwashing: A caution against misleading environmental claims, such as using "green" visuals or complex recycling labels on non-recyclable materials to enable polluting behaviors.

Waste Statistics: Approximately $3.6$ million tonnes of food waste and surplus are generated annually.
Key Agricultural Ideas:
- Organic waste upcycling and composting.
- Closed-loop nutrient and water cycles.
- Renewable energy generation (e.g., biogas via anaerobic digestion).
- Circular packaging and supply chains.

Definition: A standardized methodology to analyze environmental impacts throughout a product's life cycle, from raw material acquisition to disposal.
Scope: Unlike a simple carbon footprint, LCA considers wider environmental implications.
Standards: Governed by the International Organisation for Standardisation (ISO) under ISO 14040 and ISO 14044.
Historical Milestone: Coca Cola conducted a pioneer study in 1969.

Four Main Stages:
1. Goal and scope definition.
2. Inventory analysis.
3. Impact assessment (converting inventory data into potential damage/impact sets).
4. Interpretation.
Databases: Common sources include Ecoinvent, Agri-footprint, Carbon minds, Exiobase, and the World Food Data Base.
Methods: Analytical tools include ReCiPe 2016 (Endpoint/Midpoint), EF method, Cumulative Energy Demand (CED), and AWARE (Available WAter REmaining).