2.The book's written by Thomas A. Nazario, founder of a nonprofit called The Forgotten International, and photographed by Pulitzer Prize winner Renée C. Byer.
3.Nazario didn't want to focus on one place. He organised trips to 10 different countries.
4.According to Oxfam, the 85 richest people have as much money as the poorest half of the world.
5.Life expectancy in the poorest countries is about half that of the rich ones.
6.Nazario says he found meeting the children who live on an e-waste dump in Ghana particularly moving.
7.Women have it particularly hard in the poorest countries. They're often seen as a liability, which is why they're regularly sold as children into prostitution or trafficking.
8.Nazario also says climate change is particularly affecting the world's poor, as they rely on subsistence farming.
9.Nazario has said: "There are some things that almost always help alleviate poverty, and one is, of course, education. There's almost nothing terribly political [...] about providing decent schools in villages that have none."