CANNABIS NATION

Arizona, California, Maine, Massachusetts and Nevada will vote on legalizing recreational marijuana this year.

The U.S. FDA has approved the first liquid formulation of synthetic cannabis.

New research found the amount of weed used in a joint can help answer larger questions about marijuana use in the U.S.

California’s massive marijuana grey market is poised to go legit. But those in the business can’t agree on what the new industry should look like.

California voters will decide whether to legalize recreational pot in November after the campaign for the “Adult Use of Marijuana Act” raised over $3.7 million.

With more than $135 million in taxes and fees generated by Colorado marijuana sales last year, some shelter managers would like to see a portion of the proceeds devoted to homeless services.

Colorado homeless shelters say 20 to 30 percent of their new residents report they’re coming to the state because of pot. Is the state equipped to handle them?

The tech giant has partnered with a startup that sells computer systems to help governments track legalized marijuana sales.

It may come as no surprise, but weed sales in Colorado and Washington this year surged on the stoner's holiday.

The world’s top cannabis researchers say there’s not enough money for their work. So they’ve launched a nonprofit scientific institute to fix that.

Though Republican John Kasich has opposed recreational marijuana, he has signed a medical marijuana bill into law.

A new study suggests the health effects of marijuana aren't as serious as tobacco use.

With 10 states potentially voting on recreational or medical marijuana reforms this year, some worry the cannabis movement is trying to do too much too soon.

The bill is now headed to Gov. John Kasich, and if he approves it, Ohio will become the 25th U.S. state, and the first in the Midwest, to legalize the use of medical marijuana.

While millennials have increasingly backed marijuana legalization, the attitudes of older generations are beginning to shift as well.

Colorado in particular has attracted treatment-seekers, given the state's large contingent of advocacy groups and doctors devoted to its use.

As Ricky Williams readies a marijuana gym and pro athletes dive into pot ventures, why did Laremy Tunsil tumble in the draft after a bong tweet?

Rabbis Chaim Kanievsky and Yitzchak Zilberstein sniffed some marijuana leaves this week and said they had a "healing smell."

Officials at DCMJ, which helped run a 2015 marijuana legalization effort in Washington, say they've been invited to the White House.

Just in time for 4/20, a new poll shows record levels of U.S. support for marijuana legalization.

Pot culture’s unofficial holiday has become a global phenomenon. But have the celebration’s counterculture roots been lost along the way?