Tree of Life

Fly the whole tree of life in 3D like a constellation. 401 branches from LUCA to you, placed by real divergence times, with Wikipedia on every one. Scrub four billion years of evolution and watch branches grow — and watch whole families of them turn to ash at each mass extinction. Switch on the Trait Lens to see that flight evolved four separate times. Pick any two living things and fly to their common ancestor. Then test yourself with 120 questions, every one of which flies you to the answer.