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A young couple, Kelly Lu and Yanding Li, hold hands during a walk through Beijing's Olympic Park. "I'm pretty sad about this. It's worse and worse", explains Li. "I think the pollution is bad for our health.The PM2.5 damages our lungs [but] we don't have any choice", he laments. "I left China two and half years ago. Then it wasn't so bad. I've been abroad. I know what's good [air] and what's bad. Young people care more than old people. We have more information. We know how bad it is." PM2.5 reading - 218 - Very Unhealthy, Beijing, China – March, 2Read the post