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Animals

Bad Breath: Insects zip air holes to cut oxygen risks

The need to avoid overdosing on oxygen may drive certain insects to shut down their breathing holes periodically.

Materials Science

Petrified wood: Quick and easy

Materials scientists have turned wood into stone in a matter of days, mimicking a natural process that takes millions of years.

Health & Medicine

There’s the Rub: Football abrasions can lead to nasty infections

U.S. football players who get scrapes and cuts from playing on artificial turf sometimes develop bacterial infections that are resistant to some antibiotics.