From a distance, the Earth Rover looks much like other field robots. However, upon closer inspection, the weed control method ...

A quarter of weed — aka a quarter of an ounce of weed — clocks in at 7 grams. Photo by: Gina Coleman/Weedmaps. Retail weights.

On Friday, hundreds of stoners gathered in downtown Phoenix for the annual weed festival, celebrating weed culture more than a week before 420. There was music, glass-blowing, food and tattooing ...