https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:climate-change/x3cd7525f789ab4f1:human-activities-and-climate-change/a/phet-simulation-explore-climate-change-tx 2026-02-27T18:50:45.177271895Z PhET simulation: Explore climate change Learn about the greenhouse effect and climate change using an interactive PhET simulation. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:explore-earth-and-space-science-through-simulations-ms-ess/x87d03b443efbea0a:explore-climate-change-through-simulations/e/phet-simulation-exploring-climate-change-ms-ess 2026-02-27T18:00:31.886851552Z PhET challenge: Climate change Use a PhET simulation to test your knowledge of climate change with this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise