🚨 EARTH’S FINAL GREEN HORIZON.
Scientists say Earth’s last plants could hang on for about 1.87 billion more years as the Sun slowly brightens. The estimate comes from new climate modeling that looks far ahead, well beyond human timescales. The research suggests rising solar energy and falling carbon dioxide will eventually push plants past their limits. As temperatures climb and CO₂ drops, photosynthesis will break down. Once plants fail, food webs collapse and complex life ends.
The study highlights how Earth’s natural thermostat has kept conditions stable for billions of years. But that balance won’t last forever. The Sun’s output increases by roughly 10% every billion years, and that slow shift will reshape the planet’s climate. Earlier estimates predicted a much shorter timeline for plant survival. This new work pushes the deadline far into the future, showing how long Earth can remain habitable before extreme heat and carbon starvation take over.
It’s a reminder of how fragile life is on cosmic timescales. While 1.87 billion years sounds distant, it marks a real boundary for Earth’s biosphere. Scientists say the final chapter will come when temperatures reach levels that shut down photosynthesis entirely. At that point, even the hardiest species won’t survive.
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