Time is one of the hardest concepts to wrap your head around. People have been on the earth for about 300,000 years. For almost all of that time, we've been hunter-gatherers. But how long has the Earth been here?
NPR's Skunk Bear does a great job of helping us visualize Earth's history and our place in it.
Artists who created the ancient masterpieces that we appreciate today—cave paintings, murals on cliff walls, countless carvings, and other artifacts—left no written records about the worlds in which they lived. This often makes it difficult to know when they lived. Fortunately, modern technology has helped scientists develop several dating methods to accurately date ancient art sites.
Scientists used carbon 14 dating to determine that the charcoal used at Chauvet was over 30,000 years old