Your friend Martin loves to explore “conspiracy theories”. His favourite theory involves “Chem Trails”. He tells you that the government is secretly using airliners to spread chemicals in the atmosphe...Your friend Martin loves to explore “conspiracy theories”. His favourite theory involves “Chem Trails”. He tells you that the government is secretly using airliners to spread chemicals in the atmosphere for some unknown reason. You could make measurements of the contents in the atmosphere before and after an airline passes to see if any unexpected chemicals show up.
