--- 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=3840&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 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=3840&quality=75&auto=webp&crop=16:9 ---  # In The Latest Issue (14 May 2015) 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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