Living Planet: What’s in our air?

It’s all around us and critical for life: air. But besides oxygen, that gas we breathe to live, what’s in our air? On this week’s show, we hear about some surprising things harmful for our health that probably shouldn’t be in our air – like microplastics, and radioactivity. And we learn how one island nation is trying to keep its birds in the air by turning trappers into scientists.