How the Living World Connects
Four parts that build one picture. Start with water, which travels in a closed loop and is never used up. Then see how plants turn light into food, follow that energy one way up a food chain until it runs out, and finish by pulling a single species out of the web to watch the consequences travel further than anyone would predict.
CodePLU Goal
Upgrading Human Mental Models
Learn how to think in Workflows
How Does Water Move Around the Planet?
The water in your glass has been round this loop countless times. Learn the four stages and close the loop yourself in an interactive playground.
How Do Plants Make Their Own Food?
Plants do not eat soil — they build their own food out of air, water and light. Learn what each ingredient actually does.
Where Does the Energy in a Food Chain Come From?
Every meal traces back to sunlight, and most energy is lost at each step. Learn why food chains are always short.
What Happens When One Species Disappears?
Removing one species rarely affects only that species. Learn how effects cascade through an ecosystem.