Ancient Rocks Rethink Earth’s Early Life Timeline | Chicago News

New research flips the script on Earth’s oldest fossils—once thought to be 4.2 billion years old, they’re now pegged at 3.8 billion, reshaping our timeline for when life might have begun. Scientists zeroed in on zircon mineral grains, using isotope analysis to recalibrate the age, revealing a more stable, habitable early Earth than previously imagined. The discovery sparks global re-examination of ancient rock sites, pushing us closer to a clearer picture of life’s origins—and reminding us that even the most solid scientific conclusions can be rewritten with new evidence. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/729011567fd4cb3b