A Pale Blue Dot
Our planet has survived asteroid impacts, supervolcano eruptions, and five mass extinctions. The current disruption is different: for the first time, a single species is rewriting the atmosphere faster than any event in the geological record.
Every number below is measured by NASA, NOAA, and peer-reviewed institutions. This page updates daily.
The observable universe spans 93 billion light-years. It contains roughly 2 trillion galaxies, each with hundreds of billions of stars. Our sun is one ordinary star in the Milky Way's 200 billion.
Earth orbits in a narrow habitable zone where liquid water persists on the surface. In all the cosmos we've observed, this is the only confirmed place where life exists.
| Universe age | 13.8 billion years |
| Earth age | 4.54 billion years |
| Complex life | ~540 million years |
| Homo sapiens | ~300,000 years |
| Industrial era | ~200 years |
| Time to alter atmosphere | ~200 years |
Earth forms from the solar nebula. Molten rock, no atmosphere as we know it.
Single-celled organisms appear. They will dominate for 3 billion years.
Cyanobacteria flood the atmosphere with oxygen, triggering Earth's first mass extinction of anaerobic life.
Complex multicellular life radiates. The ancestors of every modern animal phylum emerge in ~25 million years.
Siberian volcanism triggers the worst mass extinction: 96% of marine species and 70% of land vertebrates vanish.
A 10 km asteroid ends the dinosaurs. Mammals inherit the Earth.
Modern humans appear in Africa. For 299,800 years, atmospheric CO2 never exceeds 300 ppm.
Fossil fuel burning begins in earnest. CO2 was 280 ppm. Today it exceeds 420 ppm — a 50% increase in less than 200 years.
These numbers update daily from NASA, NOAA, and peer-reviewed observatories. Each one is a signal. Together, they tell a single story.
Natural climate variability exists — ice ages, volcanic eruptions, solar cycles. But multiple independent lines of evidence converge on one conclusion: the current warming is driven by human greenhouse gas emissions.
Fossil carbon is depleted in ¹³C. As we burn coal, oil, and gas, the atmosphere's ¹³C ratio drops — a chemical fingerprint that can only come from ancient organic material.
If the sun were causing warming, both the lower and upper atmosphere would heat up. Instead, the stratosphere is cooling while the surface warms — exactly what greenhouse gas theory predicts.
The Arctic is warming 4x faster than the global average. This polar amplification pattern is a hallmark of greenhouse-driven warming, not solar forcing.
The oceans have absorbed over 90% of the excess heat trapped by greenhouse gases. This enormous thermal inertia means warming is already locked in for decades.
Arctic September sea ice has lost nearly half its extent since satellite records began in 1979. Mountain glaciers worldwide have lost over 29 metres of water equivalent since the 1950s.
Global mean sea level has risen over 60 mm since 1993, accelerating as ice sheets melt and ocean water expands from heat. Hundreds of millions live in coastal zones within reach of this rise.
CO2, temperature, and sea level — the three metrics that define the state of the climate system. Zoom out and the trajectory is unmistakable.
Every fraction of a degree matters. Every policy decision, technology investment, and individual choice shifts the trajectory. The data is clear. What we do with it is up to us.
All data is fetched daily via automated pipelines and processed at build time. No data is altered — only formatted for display. Source code and methodology are available on GitHub.