How did people make cave paintings?

In places all over the world, there are ancient paintings in caves and on cliff walls that were made thousands of years ago by the people living there. But this was way before modern paints, and those people couldn’t mosey down to the craft store to buy their brushes…so how did they make their paintings? We asked anthropologist David Ian Howe to help us find the answer. Got a question that’s close to your heART? Send it to us at BrainsOn.org/contact, and we’ll draw on all our knowledge to find the answer.  See omnystudio.com/listener for privacy information.