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2010-02-08 14:40:00

Nicotine in third-hand smoke, the residue from tobacco smoke that clings to virtually all surfaces long after a cigarette has been extinguished, reacts with the common indoor air pollutant nitrous acid to produce dangerous carcinogens.


Word of the Day
lahar
  • A volcanic mudflow.
The word 'lahar' comes from Javanese.
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