VISIT Online Fun Learn more about the climate and the weather, global warming, and the greenhouse effect through online games, climate animation, and other adventures..... Level of Difficulty: Introductory JOIN! The Environmental Science Club Enter the science room, ask the Environmental Protection Agency (EPA) a question, and get more information about your environment. Level of Difficulty: Introductory to Intermediate GET THE FACTS! Explore Marian Koshland Science Museum Learn facts about global warming and our future. Use the American carbon dioxide (CO₂) emission calculator, and select actions you can take to reduce CO₂ emissions. Level of Difficulty: Advanced PLAY! Virtual Science Comes Alive! Through online play, you can control a tornado, play with lightning, and make a snowflake. Level of Difficulty: Introductory Ask a Science Question What do you want to know?