How can we figure out how old something is? Well, we can look at other things that were found in the same place and guess their ages.
There is a special method called radiocarbon dating that helps us estimate the age of objects. It uses something called Carbon-14, which is in the air. When living things breathe, they have the same amount of Carbon-14 inside them. But when they die, the amount of Carbon-14 starts to change.
As time goes by, the amount of Carbon-14 in an object gets smaller. So by measuring the amount of Carbon-14 left in something, we can make a guess about how old it is. It takes about 5,730 years for half of the Carbon-14 to disappear.
Radiocarbon dating was invented by a scientist named Willard Libby. He won a Nobel Prize for his discovery. It has helped us learn a lot about things from prehistoric times.
