Fossilized Raindrop Dimples Add to Mystery of Ancient Earth's Warmth | Cultural Worldviews |

Pumice-like cratery indents formed by ancient raindrop splats are adding to the mystery of why the adolescent Earth was warm enough to host rivers and oceans, despite the dim sun of the day. Thanks to fossilized impressions from rains that fell down on Africa 2.7 billion years ago, the "Faint Young Sun" paradox is getting curiouser and curiouser.

Via Sakis Koukouvis