Assess students' ability to calculate a weekly carbon footprint for a student's commute using trip distance, transport mode, fuel economy or electricity emission factors, occupancy, and round-trip frequency; require clear step-by-step calculations with units and assumptions for one realistic scenario, plus analysis of at least three feasible reduction strategies (e.g., walking/biking, public transit, carpooling, EVs, schedule/routing changes) including estimated emission savings and trade-offs (cost, time, convenience).