Dede Goldsmith was asleep in a Kentucky hotel room, on the last night of a three-week trip with her husband, when her phone rang. It was 2:15 a.m. "I'm really sorry, Mrs. Goldsmith," a voice on the other end said. "Shelley has been taken to the hospital."

Shelley was her 19-year-old daughter. A student at the University of Virginia, she had taken a trip with her friends to see Dada Life, a Swedish electro-house duo, at a Washington, DC, club. At the concert, Shelley wasn't feeling well. She went to the bar for water. "Call 911," she said, before she collapsed.

"Her friend kept saying 'sorry,' like she was already gone," Goldsmith said later of the phone call. The friend told her that Shelley had taken Molly that night.

"Who's Molly?" Goldsmith asked.

Earlier that evening, August 30, 2013, Shelley had boarded a rented party bus, complete with couches and booming electronic dance music, to make the 120-mile trip from Charlottesville, Virginia, to the concert. Thirty-four University of Virginia students were on board. Almost everyone took a hit of Molly.

Molly is a powdered psychoactive that is supposed to be the purest, uncut form of the drug MDMA, often called ecstasy when it is in pill form. The high brings on a sense of euphoria and empathy. It stimulates the senses in a way that complements the immersive spectacle of an electronic dance music show.

"My heart says: if you're gonna try Molly, you better make sure you know what you're taking"

"Essentially everyone on that bus was on the drug," said Kate, one of the students on the bus. ("Kate" asked not to be identified by name.) "We got to the concert and everyone was having an amazing time."

Shelley had taken some Molly on the bus, and then another hit at the club. When she collapsed, most of her friends assumed she had passed out from dehydration. They headed back home on the bus thinking she would be fine. Her boyfriend and a close friend stayed back, going with Shelley by ambulance to Providence Hospital, where doctors attempted to revive her.

"The next day, we heard she was in a coma and then, her liver was shutting down," said Kate. "The news got progressively worse."

The Goldsmiths were a nine-hour drive away from the hospital in Washington, D.C. As they drove, Dede prayed, "God, don't let this happen." She looked up at the sky and saw a crescent moon alongside Venus. Then clouds covered the sky, only to part for a moment, displaying stars and moon again, before taking them completely out of sight. "I knew it in my heart, it was the sign I needed," she said. She knew then she was going to lose her daughter. She started to get sick. They pulled over multiple times on the drive; her stomach was "torn to pieces." They reached the hospital around 11:30 that morning. "It was a horrible, horrible scene. They had her on a ventilator," Dede Goldsmith said. "She never acknowledged our presence."

Nicolas, Shelley's 34-year-old brother, told her, "Come on Shell, you can do it." There was no response.

Her mother believes the doctors made extraordinary efforts to revive Shelley. Nevertheless, her organs failed one by one. At 7:30 p.m., the doctors took her off the ventilator.

For months after her daughter's death, Goldsmith wondered if things could have turned out differently. "Shelley didn't know what she was taking," she said. "This is a girl who had done her laundry, picked up her dry cleaning, before going to the concert. She was not frivolous in any facet of her life."

In her quest for answers, Goldsmith came to a startling realization: Molly didn't kill her daughter. Federal policies that promote drug abolition and discourage education about safe drug use killed her daughter.

"The way we deal with it has got to change because people are dying," said Goldsmith. "My heart says: if you're gonna try Molly, you better make sure you know what you're taking."

Over the last decade, the underground, unregulated raves of the ‘90s have slowly been replaced by an organized electronic dance music industry that thrives at weekend music festivals. With recent stage productions befitting blockbusters, the experience is more like a Broadway musical than a street play. The synchronicity of beats, lasers, and fireworks is meticulously planned. Tens of thousands of fans gather around a stage to celebrate their favorite DJs. They know when to bounce and sing in unison and when to raise their hands. The audience's apparel is a rainbow of neon colors: bright tutus, furry boots, floral headgear, and beaded bracelets.

Earlier this year, Ultra Music Festival in Miami saw more than 150,000 visitors, according to the show's promoters. Despite a drug-related death in 2010, Electric Daisy Carnival continues to host an average of 300,000 festival-goers in Las Vegas every year. And it's not just in the United States. Tomorrowland turns Boom, a small town in Belgium, into the biggest dance floor in Europe, with close to 180,000 attendees. It's said to draw more nationalities than the Olympics.

These festivals have become synonymous with the use of MDMA — a drug that is packaged with a promise of bliss. "It's, like, amazing. Anybody who has tried it knows it's the most alive you've ever been-times a million," said Kate.

The popularity of MDMA and its counterparts has soared. According to the National Survey on Drug Use and Health, in 2012 more than 1.3 million people ages 18 to 20, and 3 million people ages 21 to 25, said they had used ecstasy at least once in their lives. For a sense of how much ecstasy is on the market: more than 15 million pills were seized in 2010, according to the Department of Justice.

The popularity of the drug also underscores the dangers associated with it. According to Substance Abuse and Mental Health Services Administration, among people 20 and younger there were 4,460 ecstasy-related hospital emergency visits in 2005, and 10,176 in 2011 — an increase of 128 percent. Some cases have also been fatal. A 19-year-old died at a dance music event in Boston last summer. And on the same weekend that Shelley Goldsmith died last year, two young attendees died at Electric Zoo, New York's premier dance music festival. The festival was shuttered on its third day.

The current approach to reducing the number of injuries and deaths related to MDMA is complete abolition of drugs at concerts and raves. A 2003 law called the Illicit Drug Anti-Proliferation Act (popularly known as the RAVE Act), in effect, holds venue owners and promoters responsible for drug use at their events. Promoters cannot offer services that provide information for safe drug use, as that might be mistaken for endorsement of drugs. To obtain permits and insurance for large gatherings, promoters enforce a zero-tolerance drug policy. They set up security checks in conjunction with local police for pat-downs and bag checks. (Read more about the RAVE Act and its consequences.)

Robert DuPont, first director of National Institute on Drug Abuse and a former White House drug czar, believes this is the right strategy. "These drugs are illegal for a reason," he said. "They're dangerous."

But some health advocates believe that the best way to reduce the dangers of club drugs is to help people use them safely. Death by overdose on pure MDMA is "highly unlikely," according to Emanuel Sferios, founder of DanceSafe, a nonprofit that promotes health and safety at electronic dance music gatherings. The vast majority of adverse reactions are from undetected substances like MDA (methylenedioxyamphetamine), methamphetamine (commonly called speed), caffeine, or Ketamine that are often found in varying quantities in ecstasy or Molly. Still, the setting in which the drug is often consumed — outdoor summer festivals and cramped nightclubs — can make even pure MDMA dangerous. "It inhibits the body's ability to maintain its temperature," said Sferios.

This is what happened to Shelly Goldsmith. Her 14-page toxicology report, which took three months to complete, showed no traces of adulterants, alcohol, or marijuana. She died, it said, of a massive cardiac arrest from MDMA intoxication. The drug, combined with heavy activity, like dancing, in a hot environment, led to hyperthermia — heat stroke.

DanceSafe wants to provide drug checking at dance music events, but promoters won't allow it

"No drug use is 100 percent safe," said Sferios. Still, DanceSafe tries to make drug use safer by offering free water, information cards, and judgement-free conversations. Their efforts, funded by donors, are aimed at minimizing harm associated with drug use. Their most radical technique is a checking service that allows people to see if their drugs have dangerous additives in them. Users mix a small portion of the drug with a chemical compound, and if it turns a certain color, they know the drug is impure. DanceSafe offers these ecstasy-checking kits online for home use. They would like to provide on-site drug checking at dance music events, but promoters won't allow it.

"I empathize with the promoters," said Missi Wooldridge, the executive director of DanceSafe. "Because of this drug war and policy, they're scared to address drug use pragmatically. They're fearful of the legal implications. A lot of them know and understand the community. But their hands are tied."

Health educators believe that festival-goers should receive information about how much time it takes for effects of a drug to set in and how long those effects are expected to last, along with potential risks from usage. This information can prevent overdosage and reduce damage, but it's rarely made available at dance music events. For instance, at Electric Zoo this year, education was limited to a video about club drugs that every ticket holder had to watch to activate their digital entry bracelets. The public service announcement had the potential to be a public safety initiative. But instead the video perpetuated misconceptions about the drug and the people who use it.

The video shows a young man dancing, sweating profusely, and rubbing a white powder on his gums. He slurs through words like "rolling" (slang for being high on MDMA) and "sick beats" as a girl attempts to talk to him. She eventually walks away, leaving him delirious from the exaggerated effects of a drug. This missed the opportunity to provide information to a large number of attendees on how to stay safe when intoxicated.

Europe takes a much different approach to drug use at concerts. "We put our heads in the sand and pretend it's not happening," Sferios said. In Europe, on the other hand, "they come at it from a different perspective: public safety."

In Amsterdam, for instance, authorities try to provide a safe zone for users, both recreational and addicted. The relationship between the public and the local authorities resembles a progressive child-parent relationship. In order to ensure well-being and an open line of communication, the government acknowledges the existence of drug use.

Unity, a Dutch organization that provides safety tips on alcohol and drugs, has a team of trained volunteer drug and health educators. Unity is fully funded by Amsterdam's city council and is present at all major electronic dance music events, like Awakenings and Mysteryland.

"The health of the drug users is the priority in Amsterdam," said Judith Noijen, who runs Unity. Apart from medical setups that are equipped for drug-related questions and cases, a temperature-controlled area and free water are essentials at Dutch parties. Fruits are also offered: the natural sugar and vitamins is said to replenish the loss of energy and neutralize damage. "Drug use is not illegal — dealing or importing drugs is illegal," Noijen said. "The reason is, they think, 'if we start hunting users down, we create a taboo.' That's not what we want."

On a damp Friday evening in Amsterdam, Unity volunteers gathered at Gashouder, a prominent disc-shaped building in Westergasfabriek Culture Park known for hosting dance music parties. Inside, an hour later, a couple of thousand people bounced to the beats of techno in a laser-lit arena.

The volunteers, including 26-year-old Jochem Driessen, worked to set up their corner in the "chill area," designated for breaks on a night that would include drug use and dancing. Candy, vitamins, and omega-3 oil capsules were set out in bowls. Surveys and information cards about drugs including ecstasy (or XTC as the Dutch like to call it), cocaine, and ketamine were set out, both in Dutch and in English.

"The first time I saw Unity at a party, they gave me information I didn't have before," said Driessen. In a white t-shirt, a red zip-up hoodie, and jeans, he was an unassuming powerhouse of drug knowledge. "I think that a lot of accidents can be prevented concerning drugs — and a lot of people are very happy to get that information."

A basic foundation is first established in high school. "They don't say, 'If you use ecstasy, you will be addicted'," said Driessen. By relaying both the realistic effects and dangers of drugs, young people are allowed to make an informed choice. "From then on, you know the difference between ecstasy and heroin. So, people who are better educated are more careful."

Driessen sees a connection between dance music culture and ecstasy, and believes it has to do with the nature of the music. "The bass goes on and on in the same motion. Ecstasy can get you hooked onto the motion," he said. "You start to understand the music more." But this combination is not unique. "At rock concerts people will drink shit loads of alcohol. Then what are you gonna do, ban all parties? That's not a solution."

Through the night, the crowd consciously switched between dancing and taking breaks. Volunteers got visitors chatting like kids on a playground. With lollipops tucked under their tongues, they discussed their favorite drugs instead of their favorite superheroes.

While conversations are encouraged, on-site drug checking is banned by Dutch promoters. But the service is also largely unnecessary. Users can use the two official drug-checking centers in the city — which run to maximum capacity. On an average, about 35 people show up when the service opens for four hours every Thursday, according to the group that runs the center. Off-site drug checking requires a certain discipline. Results can take up to a week, and sometimes people wait for a couple of hours to drop off their samples. Still, drug checking is a well-established practice. The service, across 23 centers in the Netherlands, handles about ten thousand samples every year.

Amsterdam is often perceived as a vast ocean of hedonistic drug use. In reality, it's more like a carefully watched aquarium. The tank is constantly cleaned; contamination is swiftly flushed out. The checking center is quick to issue a detailed warning when it finds adulterants in drugs. They warn users about the particular batch of a drug and encourage them either to test it or to simply not take it at all. From posters at parties to issuing press releases, no effort is spared. With the support from local authorities, the adulterated drug is wiped off the market within weeks and often never seen again.