In the second part and conclusion, a spotlight on the mass marketing of the synthetic opioid fentanyl examines the connections between drug manufacturers and government policy. Video of sales retreats and promotional material reveals a deep cynicism among company employees and a disregard for the widespread, nefarious corporate practices.

One of Cezanne’s best-known pictures, but it is also one of his most mysterious. Why did the so-called father of modern art paint two old men hunched over a game of cards? What is the picture trying to tell us?
By exploring Cezanne’s puzzling religious beliefs and his passion for Mary Magdalene, the patron saint of Provence, Waldemar Januszczak uncovers the surprising secrets of a haunting masterpiece.

Hours before Mehmed II launches his final assault, an ominous sight shakes both sides. Rumors of a 40-ship fleet's imminent arrival have swirled for weeks, but it's exact whereabouts remained unknown. Ottoman cannons reduced the city walls to rubble, and Venetian reinforcements arrived too late. The conquest of Constantinople ushers in a new era for the Ottoman Empire, being a dominant force in world politics for 300 years. Mehmed II, in many senses, changed the nature of world history.

Immense shoals of fish throng our shallow seas. Small fish, in turn, sustain bigger ones. The rich coastal seas are the fishing grounds of our planet and can provide an abundance of food for wildlife and humanity. The seas fringing land make up less than a tenth of the world's oceans but 90 percent of marine creatures live in coastal waters, from fearsome sharks to lowly urchins. Protecting these habitats is a battle humanity must win.

Bill Gates is on a mission. He needs to unlock the mysteries of the PDP-10 computer. But the adults won't share the source code with 13-year-old Bill. So he enlists his older friend Paul Allen. Together they boldly go where no one has gone before. If they find the source code, Bill and Paul will finally be able to master the computer.
The connections that shaped Bill Gates' life come into focus, including a childhood friendship and his unique bond with Microsoft co-founder Paul Allen.

A rain forest is the richest habitat on Earth. Exactly how many species rain forests contain is unknown, but it runs into millions. And new ones are discovered every week. There are some, like the clouded leopard, we still know virtually nothing about. Although they cover just seven percent of the world's land area, jungles play a vital role in the health of the planet .
Jungles and rainforests are home to an incredible variety of species like preening birds, intelligent orangutans and remarkably ambitious ants.