⏳ Time slider
Drag it, press ▶ to travel, or click an era label under the bar to jump. It reaches back 350,000 years — Ice-Age art and the first humans included. ← → nudge, space plays.

🚶 Human ⇄ 🦕 Life
Toggle bottom-left. Human maps deep prehistory to today; Life on Earth shows 4.6 billion years — with continents drifting to their true ancient positions and fossil species where they lived.

🖱 Click anything
Events open a story with a photo and a 🔗 Cause & effect panel — what led here and what followed — while glowing threads on the map reach out to where those causes (red) and effects (amber) happened. Search an idea like "vaccine" to find every event that mentions it. Cities & countries show their current state.

📚 Themes & 🎬 Tours
Browse the whole history of a single theme (bottom-left) — 170 hand-written collections from music to mathematics to the Silk Road, each spotlit across all of time. Or take a guided tour, and retrace your path as a golden 🧵 Trail.

🔍 Zoom, search & layers
Scroll to dive into any region; clusters split as you go. Search jumps to any of 69,000+ events (or type a theme name) — press / to search, ↑↓ + Enter to pick. Borders, nations & cities update with the year; switch Terrain/Satellite.

🦕 Life on Earth
Watch continents assemble and break apart; ~18,000 fossil species sit where they lived, with famous creatures named. ★ marks the great turning points — mass extinctions and impacts.