Inside: Sex and Drugs

Mariana van Zeller journeys to the heart of the American escort industry and uncovers the gritty reality behind the supply and demand of high-end sex work.

Using the wealth, culture and seized bounty of Mexican drug traffickers - narco bling - as a jumping off point, correspondent Mariana van Zeller explores the strange and dangerous netherworld of the largest and most successful of the Mexican drug cartels, led by one of the world's most wanted criminals.

Sex tourism may be one of Thailand's most profitable industries. Many of the foreign men who enter the country as tourists come for sex the demand is high, and the market is massive. Servicing this demand are women trafficked from all over the world, including those lured to Thailand by a vicious Thai-Uzbek ring. Most Uzbek women who work in the industry come to Bangkok out of financial desperation; they believe they'll get good jobs, but they end up as slaves.

Heroin is one of the most addictive drugs on earth. Stronger, purer and easier to get than ever before. The newest forms of heroin can be snorted or smoked--rather than injected--attracting millions of new users. National Geographic investigates how the war in Afghanistan has inadvertently unleashed a deluge of heroin, feeding addicts from Kabul to Europe to America's heartland.

Despite the fact that cultivation of cannabis remains a federal offense, a new generation of "ganja-preneurs" hopes to cash in on the growing market for medical marijuana. In California, the Green Rush is in full bloom as growers, dispensaries, hydroponic nurseries, testing labs and insurance companies fight for a piece of this irresistible economic brownie. Marijuana Gold Rush enters the brave new business world of pot - where Manhattan execs have joined forces with old-school growers in Northern California to explore the real potential of this budding industry.