Easter Island is a fascinating place, and not just because of the the moai, the statues with the big heads.
If you look beyond the statues in photographs, you see a grassy landscape. As far as scientists can tell, the island was a place with lots of trees when humans arrived.
There's still some debate about what happened there, and Dr. Candace Gossen of Blackcoyote Archaeology is one of the scientists trying to find answers.
She visits the Exchange with details of her visits to Rapa Nui (Easter Island) and her research there.