With legal weed becoming more mainstream, why is it so hard to find if your a scientist? Sarah Owermohle from POLITICO gives us a look.

According to a recent Gallup poll, most Americans believe marijuana should be legalized nationwide. But there's one important group that remains unconvinced: politicians. Harry Enten from FiveThirtyEight breaks down the story.

Gunman kills at least 4, wounds 10, in Northern California, Pence presses CEOs to help sell tax overhaul, and everyone agrees that weed is great except politicians.

Gary Fields from the Wall Street Journal explains why legal marijuana poses a problem for gun buyers.

How much marijuana is too much for drivers? Kay Lazar from the Boston Globe takes a look.

The changing face of marijuana can be seen in states where recreational use has become legal. Kathleen Burke from MarketWatch has more.