Country singer Willie Nelson was arrested yesterday by Border Patrol agents in Texas after they caught a whiff of marijuana coming from his tour bus. Nelson admitted the six ounces of weed were his and posted a $2,500 bond.

A massive new study appears to show that a daily dosage of common antiretroviral pill called Truvada to HIV-negative patients is 90 percent effective at preventing HIV infection. Terrific news! Too bad no one knows who'll pay for it.

Medical marijuana now has a national trade organization. Just like every other corporate special interest! Ah, how far we've come. In honor of this dubious step towards the mainstream, allow us to suggest some useful talking points.

Yet more evidence that Northern California is the Chillest Place on Earth: City-sanctioned pot farms and "gardens" should soon be springing up in a handful of super laid-back municipalities. In Oakland, they're processing applications for four "industrial sized pot farms."

This week, the Mexican government auctioned off a cache of narco-bling seized from drug lords in Mexico City. If you were in the market for a $25,000 rosary, this was the place to be! Here are the craziest pieces:

Government counter-terrorism officials gamed out a very likely terrorist scenario in a Northern California drill this week: That of marijuana growers setting off bombs, taking hostages, and laying siege to a strategically critical dam. We are so prepared for this!

No Darvon! Airport smoking! Lou Gehrig's disease! Gym grunting! Flu shots! Racewalking! Nigerian curses! And mental illness is a call to arms! It's your Friday Health Watch, where we watch your health—while hallucinating and self-medicating in a nonstop cycle!

Long Island nurse Erick St. Louis was arrested for allegedly stealing medical waste in search of Fentanyl patches, a potent cancer drug, which he would suck like "an artichoke" to get high. Then he'd dump the waste on a playground.

Did you know the Office of National Drug Control Policy has a publicly-accessible database of "street terms" for drugs? It's like the feds' own Urban Dictionary. But with even less accountability and oversight! Here's an abridged version.

Mike Jay's High Society parallels the history of drugs to the history of imperialism (Chinese opium, British heroine, Austrian cocaine). As anyone who's studied abroad for the "cultural experience" will tell you: every society is a high society.

Italian police have seized 2,200 pounds of coke entering the country in a shipping container. The smugglers should have considered using a jet, since that's the hot new trend in drug smuggling. And we thought Italians were so fashionable!

Alarming recent news: "a new trend called 'robo tripping,'" is proving "kids will try anything to get high." Are you doing enough to "protect your teenagers from cough suppressants"? Beware. This is, after all, a brand new trend.

Students at Manhattan's Stuyvesant High School like to smoke weed between classes in an outdoor spot called "The Alcove." But an administrator smelled the sweet stench of burning buds through her office window and now the party's over. Stupid kids.

Here we see the effects of LSD on British troops, the drug which was given to them in a test before daily exercises. As seen in the results, LSD induces fun times frolicking, laughing and climbing trees to feed birds.

Mexican drug cartels are allegedly hiring hitmen as young as 12 years old to kill rivals and, failing that, random people — "maybe a construction worker or a taxi driver" — one kid, "El Ponchis" says on a cartel video.

Frank Melchiorre, a 26-year-old New Jersey science teacher, was very popular with his students until he was arrested Wednesday for—well, just read the comments on his Facebook fan page, starting from the bottom. They tell the story.

Washington becomes the second state to ban caffeinated alcohol drinks, thereby solving all their problems.

Now there's a peyote scarcity. On top of everything else.

A new report by the EU's drug agency places Britain on top of the world's cocaine consuming nations, with more young Britons having used cocaine than Americans in the same age group. There's also been an increase in crack smoking.

David Headley, an American of Pakistani descent who is accused of helping plan the Mumbai terrorist attacks, was also a DEA informant. American officials received repeated warnings that Headley was planning attacks, but ignored them because drugs are really bad.