However there has long been a quest for "smoking gun" evidence for liquid water currently on the planet.

CNN: Life on Mars?

What help make protagonist Walker believable and empathetic are his cynical, searing insights and wisecracks and his politically incorrect habits of smoking and drinking (the liquid of choice: good old scotch, not wine).

FORBES: Fact And Comment

E-cigarettes work by vaporising nicotine-laced liquid that can be inhaled, replicating the effect of smoking without all of the carcinogens.

CNN: Sales of e-cigarettes continue to soar