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Diseases that can affect these airways include: Your airways branch into tiny tubes (bronchioles) that end in clusters of air sacs called alveoli. These air sacs make up most of your lung tissue.

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A study found that burning wood in our homes is one of the most dangerous types of air pollution. Here’s what you need to know Wood burning stoves have become a classic British middle class ...

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“My calendar’s pretty full, but I can squeeze you in between my post-holiday burnout and my midwinter blues.” ...

“Apparently, there’s a new Chinese A.I. company that can much more cheaply make us have to hear about A.I.” ...

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The cable channel Cartoon Network and its adult-geared programming block Adult Swim are reportedly taking episodes out of their rerun rotations following the recent plane crashes in Washington ...