Farmers in the U.S. have grown cannabis since the 1600s — but policymakers are still figuring out how to regulate two famous types of Cannabis sativa. A historian calls the plant "incredibly cryptic." ...

A mystery has been lingering over cannabis for nearly as long as people have been smoking pot: Do different types of marijuana get people high in different ways? California cannabis companies already ...

Marijuana − medical and recreational − is legal throughout more than half of the United States, and for some looking to familiarize themselves with the plant and its effects, learning all of the ...

Sativa and indica are the two main types of cannabis. Hybrid cannabis is a combination of both sativa and indica. Sativa has a higher THC content, so it's more energizing, while indica has a higher ...

The Internet is buzzing about a new breed of marijuana that apparently causes no buzz of its own. Israeli researchers have bred cannabis plants that look, smell and taste like ordinary marijuana — but ...