Mortality data show only the final result of opioid overdose, not why it happens.
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The toll of the opioid epidemic is often derived from toxicology reports. These rely on drug tests. A medical historian explains these tests and how they fall short of capturing why people are dying.
The San’s arrows may look dainty, but when tipped with poison they are lethal for hunting.
The early use of poison is one more indicator of an advanced repertoire of behavioural and technological traits that have characterised our species from the earliest times.
Scientists are on the hunt – just don't try this at home.
You have gas chromatography and mass spectrometry to thank for keeping you safe from explosives in air travel.
As the holidays draw near, many of us will hop on a plane to visit friends and family – or just get away from it all. Some will be subjected to a swab at the airport to test clothes and baggage for explosives…