Legality of cannabis
The conservative state's hands-off approach has made it the hottest weed market in the US.
How a rush to cash-in on cannabis ended in disaster in New Mexico.
By Jessica Lussenhop and Zhaoyin Feng
BBC News, New Mexico and Oklahoma
By Amy Stewart
BBC News NI
By Charlie Jones
A quadcopter was seen releasing small bags, believed to contain illegal drugs, over Tel Aviv, Israel.