Underpaid and exhausted: the human cost of your Kindle

In the Chinese city of Hengyang, we find a fatigued, disposable workforce assembling gadgets for Amazon, owned by the world's richest man.

Five o'clock in the morning and the young woman's eyelids are drooping. All night she has been removing spots of dust from Amazon smartspeakers with a toothbrush. Time seems to crawl. Now she is overwhelmed with exhaustion.

She works on, more and more slowly, until she can do no more. She looks around the workshop. Other workers have rested their heads on the bench. She slumps forward and falls asleep.