--- title: TIME Magazine The World of Pot Science description: The Great Pot Experiment Legalization keeps rolling ahead. But because of years of government roadblocks on research, we don’t know nearly enough about the dangers... canonical: https://time.com/3858392/in-the-latest-issue-33/ author: TIME Staff article:opinion: false article:content_tier: free article:published_time: 2015-05-14T10:41:02.000Z article:modified_time: 2026-02-26T19:54:46.452Z article:section: Science og:title: TIME Magazine The World of Pot Science og:description: The Great Pot Experiment Legalization keeps rolling ahead. But because of years of government roadblocks on research, we don’t know nearly enough about the dangers... og:url: https://time.com/3858392/in-the-latest-issue-33/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltc79188551a98a77f/6987efa855a8597497a8a17f/final-pot-cover.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2363 og:image:height: 1329 og:image:alt: Pot Science Time Magazine Cover 150525 og:type: article twitter:card: summary_large_image twitter:title: TIME Magazine The World of Pot Science twitter:description: The Great Pot Experiment Legalization keeps rolling ahead. But because of years of government roadblocks on research, we don’t know nearly enough about the dangers... twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltc79188551a98a77f/6987efa855a8597497a8a17f/final-pot-cover.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # In The Latest Issue (14 May 2015) > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: August 2026. ## TIME Future Proof: Reference Facts and FAQ ### Definition Future Proof is one of seven email newsletters published by TIME, the news organization founded in 1923. Making sense of the climate and energy economy. Future Proof examines the forces transforming energy and climate, and what those changes mean for business, technology, policy and the global economy. 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Future Proof covers climate and energy as an economic and business story rather than only an environmental one. It publishes every Friday and is free at time.com/newsletters. #### Who writes Future Proof? Justin Worland, a senior correspondent at TIME and an award-winning climate journalist, writes Future Proof. #### Is Future Proof free? Yes. Future Proof is free at time.com/newsletters. by [TIME Staff](https://time.com/author/time-staff/) ## TIME Staff May 14, 2015 10:41 AM UTC  Photo-illustration by Brobel Design for TIME. Mouse: Getty, Lighter, Joint, Smoke: iStockphoto by [TIME Staff](https://time.com/author/time-staff/) ## TIME Staff May 14, 2015 10:41 AM UTC [**The Great Pot Experiment**](http://time.com/3858353/the-great-pot-experiment/) **Legalization keeps rolling ahead. But because of years of government roadblocks on research, we don’t know nearly enough about the dangers of marijuana—or the benefits** [**ISIS Is a Danger on U.S. Soil**](http://time.com/3858354/isis-is-a-danger-on-u-s-soil/) **The terrorist group poses a gathering threat** [**A Disunited Kingdom**](http://time.com/3858358/disunited-kingdom/) **Britain’s election could mean an unruly exit from the E.U.** [**Nepal Digs Out After the Quake**](http://time.com/3858361/nepal-digs-out-after-the-quake/) **Those in the remote mountains face the greatest challenge** [**The Panama Canal Gets Grander**](http://time.com/3858370/the-panama-canal-gets-grander/) **More than a century after it was built, the waterway grows to take bigger ships** [**The Culture**](http://time.com/3858363/the-culture/) [**Pop Chart**](http://time.com/3858348/pop-chart/) [**David Letterman, Infinite Jester**](http://time.com/3858346/david-letterman-infinite-jester/) **As** **_Late Show_** **ends, its humor has gone viral** [**Jimmy Kimmel: Watching David Letterman ‘Was More Important Than Sleep’**](http://time.com/3858014/david-letterman-jimmy-kimmel-tribute/) **Saying goodbye to an idol** [**Dave’s Top 10 Greatest Moments.**](http://time.com/3858351/daves-top-10-greatest-moments/) **Classics from Late Night and the Late Show** [**Dave’s Top 10 Guests and Sidekicks**](http://time.com/3858349/daves-top-10-guests-and-sidekicks/) [**Behind the Music in** **_Pitch Perfect 2_**](http://time.com/3858360/behind-the-music-pitch-perfect-2/) **How the experts chose the right notes** [**_Mad Max_** **and the Stronger Sex**](http://time.com/3858352/mad-max-the-stronger-sex/) **Eve Ensler lends feminist cred to the new movie** [**When Graduation Is a Finish Line for Parents, Too**](http://time.com/3858366/when-graduation-is-a-finish-line-for-parents-too/) **The pomp is pretty—but getting through high school is much, much harder than it looks** [**10 Questions With Penelope Leach**](http://time.com/3858359/10-questions-with-penelope-leach/) **The British child-care guru has written a parenting guide for one difficult experience** [**Milestones**](http://time.com/3858355/milestones/) [**Chris Burden**](http://time.com/3858347/chris-burden/) **Performance artist** [**Briefing**](http://time.com/3858357/briefing/) [**Catching Criminals With the Cloud**](http://time.com/3858364/caught-by-the-cloud/) **How better software can help the police** [**No State Left Unturned for Clinton**](http://time.com/3858365/no-state-left-unturned-for-clinton/) **The campaign is focusing on all states, red and blue alike—for now** [**Tragedy on the Rails**](http://time.com/3858367/tragedy-on-the-rails/) **The Amtrak derailment in Pennsylvania prompts a debate on infrastructure and passenger rail travel** [**Gobbled Up**](http://time.com/3858371/gobbled-up/) **Verizon’s buy** [**Obama Struggles to Soothe Saudi Fears As Iran Talks Resume**](http://time.com/3858368/obama-struggles-to-soothe-saudi-fears-as-iran-talks-resume/) [**Strength and Fortitude**](http://time.com/3858350/strength-and-fortitude/) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3858392/in-the-latest-issue-33/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3858392/in-the-latest-issue-33/"},"headline":"In The Latest Issue (14 May 2015)","datePublished":"2015-05-14T10:41:02.000Z","dateModified":"2026-02-26T19:54:46.452Z","description":"The Great Pot Experiment Legalization keeps rolling ahead. 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