🔍 Explore
Investigate how Earth's atmosphere traps warmth to create a livable climate. Track sunlight and infrared photons, adjust greenhouse gas levels across history, and watch surface temperatures respond.

🎮 Try It
• Press Start Sunlight and follow yellow sunlight photons reaching the surface and red infrared photons radiating back up.
• Use the Greenhouse Gas Concentration slider or presets to compare conditions between the Ice Age and Today.
• Turn on Surface Thermometer and toggle Cloud to see how cloud cover influences heat retention.

🎯 Your Mission
Set greenhouse gases to None, record the steady temperature, then increase gases to Today and observe how many degrees the surface warms.

🌍 Real-World Connection
A greenhouse stays warm enough to grow tropical plants in cold climates because its transparent panels let sunlight in while trapping heat inside.