Video
Shop
Culture
Family
Wellness
Food
Living
Style

Travel
News
Book Club

Newsletter

Privacy Policy
Your US State Privacy Rights
Children's Online Privacy Policy
Interest-Based Ads
Terms of Use
Do Not Sell My Info
Contact Us
© 2026 ABC News

NaN:NaN

ABC News
April 20, 2010

AC

Theories on how 420 came to be a celebration of cannabis culture.

Up Next in news

Stairway to Heaven: Psychedelics Soothe Dying

Stairway to Heaven: Psychedelics Soothe Dying

Calif.: Strange Bedfellows in Pro-Pot Push

Calif.: Strange Bedfellows in Pro-Pot Push

Marijuana Mogul Pushes Legalization

Marijuana Mogul Pushes Legalization

The latest lifestyle and entertainment news and inspiration for how to live your best life - all from Good Morning America.

Contests
Terms of Use
Privacy Policy
Do Not Sell My Info
Children’s Online Privacy Policy
Advertise with us

Your US State Privacy Rights
Interest-Based Ads
About Nielsen Measurement
Press
Feedback

Shop FAQs
ABC News
ABC
All Videos
All Topics

Sitemap

© 2026 ABC News

Privacy Policy—
Your US State Privacy Rights—
Children's Online Privacy Policy—
Interest-Based Ads—
Terms of Use—
Do Not Sell My Info—
Contact Us—

© 2026 ABC News