Henderson Island, in the South Pacific, is thousands of miles from any major industrial centers or human communities. But it's filled with trash — more than 37 million pieces of it, researchers say.
Jennifer Lavers/University of Tasmania
Easter Island is known best for its hundreds of colossal stone statues depicting human figures. The causes of its societal and economic collapse centuries ago are fiercely debated among scientists.
Luis C. Cobo/Flickr
A Filipino chicken vendor in Quezon City, east of Manila, Philippines. Researchers say Pacific island chicken are genetically similar to the variety found in the Philippines, but different from South American chicken.
Rolex Dela Pena/EPA/Landov