Summary
The models indicate that the biosphere could enter a twilight phase, where life ceases.
The projected timeframe ranges from 100 million to 900 million years in the future.
These numbers are extremely large, far beyond human history.
Key Points
3 points1
Simplified climate models were employed to predict long‑term Earth conditions.
2
The concept of "biosphere twilight" refers to the gradual loss of life.
3
Estimated timeline: 100–900 million years from now.
New Words to Learn
4 wordsbiosphere
All living organisms and their environments on Earth
twilight
A period when something is gradually ending, here meaning the end of life on Earth
climate models
Computer simulations that forecast changes in weather and temperature over long periods
million
A numeric value equal to one thousand thousand
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