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Talk about lucky, the Earth will only be habitable by most life for another 500 million years. We showed up in the last 10% of Earth's (habitable) life. If evol
by merpnderp 5y ago
Talk about lucky, the Earth will only be habitable by most life for another 500 million years. We showed up in the last 10% of Earth's (habitable) life. If evolution would have zigged instead zagging, we'd never have been at all.
- Reason077 5y ago> ”We showed up in the last 10% of Earth's (habitable) life.” While the Earth has hosted microbial life for about 3.7 billion years, it was only about 2.3 billion years ago (the GOE) that free oxygen started to accumulate in the ocean and atmosphere, making complex multicellular life possible. So we’re probably in more like the last 20% or 25% of the habitable period.