It has always been dangerous to work in mines. The roof may fall in and there are risks of flooding and explosion. Over the years, miners found that keeping canaries in the mines was a good early warning system. The birds were likely to die if there was a gas build up and this gave [...]
Pain is nothing more than a warning system that something is wrong with your body. So if a doctor treats the underlying injury or disease, this will usually relieve the pain or, at least, reduce it to more manageable levels. As a simple example, taking an antibiotic will usually cure the targeted bacterial infection, eliminate [...]
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