Physicians like Francis D’Ambrosio have substantial reason to believe that cannabinoids may indeed be effective medical treatment.

Forget prize piglets, pie-eating contests and sheep-shearing demonstrations. This fair is dedicated to showcasing the very best marijuana grown in California, and by extension, the world.

Medical pot patients could see their marijuana become cleaner and safer, with the cost jumping about 10 percent, under new draft regulations for California’s multibillion-dollar medical cannabis industry.

Medical pot patients could see their marijuana become cleaner and safer, with the cost jumping about 10 percent, under new draft regulations for California’s multibillion-dollar medical cannabis industry.

California was the first state to allow medical marijuana. Now, two decades later, voters are expected to be asked whether to legalize recreational use of the drug.

California was the first state to allow medical marijuana. Now, two decades later, voters are expected to be asked whether to legalize recreational use of the drug.

To hear Troy Dayton tell it, California is on the brink of a gold rush — or, more specifically, a green rush. While insiders are working behind the scenes to put the question of recreational marijuana to voters on the November ballot, investors and business owners throughout the Golden State are getting ready to jump into the recreational pot business.

While both Israel and California are leaders in medical cannabis, both programs can still be improved.

And if California votes to legalize, other states will follow.

And if California votes to legalize, other states will follow.

If Dr. Larry Bedard has his way, Marin General Hospital would become the first acute-care medical center in California to allow patients to openly consume medical marijuana in the hospital.

If Dr. Larry Bedard has his way, Marin General Hospital would become the first acute-care medical center in California to allow patients to openly consume medical marijuana in the hospital.

Lori Ajax has two years to set up California’s first system to license, regulate and tax medical marijuana. Gov. Jerry Brown recently appointed the Republican to become the first chief of the Bureau of Medical Marijuana Regulation.

Lori Ajax has two years to set up California’s first system to license, regulate and tax medical marijuana. Gov. Jerry Brown recently appointed the Republican to become the first chief of the Bureau of Medical Marijuana Regulation.

A former pro football star and an advocate for athlete marijuana use have teamed up to open a gym in San Francisco that they say will be one of the first in the world to allow members to smoke pot while working out.

"I would look and I would think to myself what can I put here? What can we do? It hit me. This could be a medical marijuana facility."

Carlos and I are bombing around San Francisco in his 1999 Maxima, delivering marijuana to people who have ordered it from Eaze, a company that many have called the "Uber of cannabis."

As California seeks to regulate its medical marijuana economy, as well as set rules for personal cultivation, a March 1 deadline is making scores of cities and counties paranoid about how to govern pot.

As California seeks to regulate its medical marijuana economy, as well as set rules for personal cultivation, a March 1 deadline is making scores of cities and counties paranoid about how to govern pot.