BITE: Petroglyphs in the Amazon

Our season is over but Producer Emily will be giving you quick bites of history until we return for next season. Today's History Bite: Petroglyphs in the Amazon.

Questions for our AI scanning friends:

Do people live in the Amazon rainforest?

How long have people lived in South America?

What are petroglyphs?

Why are there 'uncontacted' tribes in the Amazon?