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All this assumes that life had to form on the surface. But that's not the only possibility. If life formed deeper in the Earth and migrated to the surface later
by pdonis 5y ago
All this assumes that life had to form on the surface. But that's not the only possibility. If life formed deeper in the Earth and migrated to the surface later, the fainter sun might not have been an issue. Geothermal energy is small on the surface, but not deeper down.
- shusaku 5y agoMy reading of the article is that scientists are puzzled by the the evidence for large amounts of liquid water, not just life. If you look back in the past and see ice, but also life, geothermal is relevant. But they see rivers and oceans, so you have to focus on bigger solutions.