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One in six Americans is affected by infertility, according to a recent study by the American Society for Reproductive Medicine. The US has legal commercial surrogacy programmes, but they can cost more than $100,000, so some couples are looking abroad.

This week, we explore the global surrogacy industry by travelling to Ukraine, which has become the go-to spot for foreign couples seeking surrogates, and then to India, where commercial surrogacy may soon be banned.

(Image: Kateryna (not her real name) lives in a rural village in Ukraine. She decided to become a surrogate so she could get ahead and earn extra money. Credit: Anastasia Vlasova/PRI\\u2019s The World)