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Earth's Vegetation Could Survive 1.9 Billion Years ?

7/6/2026

Summary

Story summary

Jacob Haqq-Misra and Eric Wolf estimate Earth's vegetative biosphere could survive up to 1.87 billion years.
Their 3-D model shows a Sun 20 percent brighter would raise surface temperatures to ~65 °C, while a strong weathering scenario would drop CO2 enough to starve plants and end the biosphere around 1.84 billion years.
The researchers assume no plant evolution or human/alien technology and say temperature-adapted or high-altitude plants could extend the biosphere until oceans disappear.

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Story summary

Jacob Haqq-Misra and Eric Wolf estimate Earth's vegetative biosphere could survive up to 1.87 billion years.
Their 3-D model shows a Sun 20 percent brighter would raise surface temperatures to ~65 °C, while a strong weathering scenario would drop CO2 enough to starve plants and end the biosphere around 1.84 billion years.
The researchers assume no plant evolution or human/alien technology and say temperature-adapted or high-altitude plants could extend the biosphere until oceans disappear.