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Nicotines interaction with brain receptors makes it one of the most dependency-forming substances known

I found these great ads on Flickr (all except for the color one, which was on Pinterest) credited to a user named smashingbird

You can tell, Sean totally missed the warning, and then -- looking like a teen caught in his parents' liquor cabinet -- made a poor attempt to hide the evidence

This content first appeared in the June 2014 issue of BBC History Magazine Authors Matt Elton is the podcast editor at HistoryExtra

In an article in Cell Systems, a multidisciplinary team at the Wyss Institute for Biologically Inspired Engineering at Harvard University describes an instrument they engineered that can breathe in and out, actively smoke regular and electronic cigarettes much like a human, and deliver the smoke to microfluidic organs-on-chips lined by human lung small airway cells isolated from non-smokers or COPD patients

Smoking behavior in liver transplant recipients