Topic
First aid
2 articles
Biology
Why can’t you breathe and swallow at once?
Every mouthful you take requires you to stop breathing for about a second. A cat does not have to. Neither did you, until you were about four months old, and what you got in exchange was the ability to say your own name.
Biology
How can pushing on someone’s chest keep them alive?
A stranger kneels down and pushes on the middle of someone’s chest, over and over, for ten minutes. No medicine, no machine, nothing fetched. So what is moving in there?