They tell of terrible things done to humans by humans.

VOA: special.2010.04.18

Scientists say an experimental vaccine reduced the risk of infection in humans by thirty-one percent and was safe.

VOA: special.2009.09.30

(Movie Sound) But as the exotically beautiful Neytiri teaches Jake about the Na'vi and their connection to their world, he becomes convinced that the exploitation by his fellow humans must be stopped.

VOA: standard.2009.12.19