Fossils aren’t just interesting and fun to look at — they’re also proof of the existence of once-living things (like dinosaurs, animals, plants and even DNA remnants). Through these fossils we’re able to learn a lot about life from billions of years ago. We can even take a look at animals and life-forms that are no longer on the planet! These fossils (and the education around them) deserve to be preserved and explored. That’s why we celebrate National Fossil Day annually on October 13th.