Scientists identify 'sweet spot' for early stage of life on Earth that preceded LUCA, the ancestor of all living things - Live Science

New research has pinned down the onset of the "RNA World," a hypothetical time in Earth's very early history when RNA was the primary replicating substance.

By Sascha Pare Edited by Laura Geggel , Brandon Specktor Published 22 September 2026 In News 4 min read When you purchase through links on our site, we may earn an affiliate commission. Here's how it works .