How do scientists know how old fossils are?
How do scientists know how old fossils are?  
Podcast: Moment of Um
Published On: Wed Feb 26 2025
Description: Have you ever seen a dinosaur fossil from millions of years ago and wondered how scientists figured out the age of those big ol’ bones? Us too! So we asked paleontologist Jingmai O’Connor to help us find the answer.Got a question that’s absolutely petrifying? Send it to us at BrainsOn.org/contact, and we’ll help excavate the answer!