From the Desk of NikP@EL

4.54 billion years of Earth, in 2 minutes. The camera never moves. It sits above Africa the whole time — so you watch every other continent arrive, collide, and leave. Sound on. 🔊

Fifty ice ages in a row. For 2.6 million years, CO₂ has swung between 185 and 280 ppm and sea level 125 m, in a beat you can set a clock to. We appear in the last 300,000 years. Farming, cities, writing — all of it in one warm gap. 🔊

66 million years ago a rock 10–15 km wide hit the Yucatán at 20 km/s. The impact took seconds. Then dust shut down photosynthesis for two years and the food chain collapsed from the bottom up. Around 75% of species died. 165 million years of dinosaurs, over. 🔊

The Sahara was under water. 90 million years ago there was no ice at either pole. All that water was in the ocean instead, so the sea stood around 200 m higher and flooded across North Africa. Sharks swam over what is now desert. Warm world, high seas. That's the whole rule. 🔊

Earth's magnetic field flips. North becomes south. Any rock cooling through the field locks in its direction — but the seafloor records every flip in order, as symmetrical stripes either side of the spreading ridges. Twice it stopped for tens of millions of years. 🔊

Most of Earth is empty. Same planet. Three different maps. A. Where people actually live. Not continents. Corridors. Cities. River valleys. Coasts. Built-up land is ~1% of habitable land. Night lights are the real census. B. Where humans can live with power, ships, heating, and imports. Ice sheets and empty dune seas still don’t. C. Where you can grow food without a supply chain. Plains. Valleys. Rain. Soil. That’s the tightest map. About half of habitable land is already farm and pasture. We don’t live on “the land.” We live on a few good strips of it.

The Atlantic Ocean is 0 km wide. Watch it open. Every coastline on Earth fitted together 250 million years ago — then the rift tore through and the ocean grew 2,900 km, 2.5 cm at a time. Wegener saw the fit in 1912. He died before anyone believed him. 🔊

The worst thing that ever happened to life took a million years. Siberia erupted continuously. CO₂ went from 500 to nearly 3,000 ppm, oceans heated and lost their oxygen, and ~81% of marine species died. Recovery took 10 million years. 🔊

Earth once buried its own forests. Tropical basins sank fast enough to bury wood before it rotted. So much carbon went underground that oxygen hit ~30% — dragonflies with 70cm wings. That buried carbon is the coal we burn. 🔊

Twice, the ice reached the equator. Not a cold snap — a frozen planet, for tens of millions of years. −40 °C average. Then volcanic CO₂ builds up until the ice breaks The first animals appear right after the ice melts. 🔊

For two billion years, nothing on Earth could have breathed. Then microbes started producing oxygen as waste. It rusted the oceans and killed most of what was alive. The air you breathe is pollution from a global catastrophe. 🔊