A look at new research on using THC, the principal drug in marijuana, to fight HIV and damage cancer cells.

“You keep smoking weed, you keep laughing with your friends, you’ll never grow up to be David Brooks.”

Colbert weighs in on how marijuana legalization laws are going in Washington state and Colorado.

CNN’s Dr. Sanjay Gupta changes his mind in favor of marijuana legalization, and Stephen Colbert is there.

A new RNC survey sounds like the GOP is worried that its positions on gays, abortion and pot are hurting it.

A virtual visit to 3 likely marijuana farms in northern California shows devastating deforestation caused by it.

Entirely new business opportunity are emerging from the smoke of marijuana legalization in CO and WA state.

White House and Justice Department considering legal action against the two states.

Gay marriage was legalized in three states last election day, recreational pot in two. Is there a connection?

Colorado, Washington state and Detroit all legalized recreational marijuana, and Massachusetts approved medical.