This is the story of two of the biggest scientific breakthroughs of the 21st century, told by the incredible scientists who made them happen. The first is LIGO’s measurement of gravitational waves coming from a black hole merger, and the second, the Event Horizon Telescope’s image of a black hole.

The Pirate Republic of Nassau gets fat attacking trade between Britain and the Americas. But its foundations are rocked by the death of the most successful pirate who ever lived, Black Sam Bellamy, washed up on a New England beach. But Edward Thatch reinvents himself and becomes the most devilish pirate of all, Blackbeard. Woodes Rogers' campaign begins with the offer of a pardon, which Hornigold and Jennings accept; but not all Nassau pirates agree.

Most people hope they'll live a long, healthy, and happy life, but few are able to travel the world in an attempt to reverse-engineer the formula for longevity. That's exactly what Dan Buettner did: Beginning in the early aughts, Buettner collaborated with National Geographic, scouring the globe in pursuit of places where people live much longer than average, and thus, the concept of 'Blue Zones' came to be.
In the first episode, how can people live so long and with such great health? A trip to Okinawa reveals simple secrets about diet, lifestyle and longevity. They maintain a sense of purpose no matter what age and you won't find them laying on the sofa.

By August 1949 the USSR became the world's second superpower, thanks to its spies who had stolen America's atomic secrets. But by March 1953, Stalin is dead and KGB chief, Beria, is executed later the same year. Nikita Kruschev tries to reduce the power of the security service, splitting it into several sections...but it doesn't last and, soon, the KGB is back.
In the USSR, countless KGB operatives spied on opponents of the regime at home, guarded the state and party leadership, and abroad tried to find out as much as possible about the intentions of the NATO countries and, if possible, to sabotage them.

The Hale-Bopp Comet is passing Earth and rumours of a mysterious object following the comet could mean the sign that the Heaven’s Gate community could be looking for. With plans for the Exit, the group members begin saying goodbye to the world. In the aftermath of the suicides, the world and the surviving former followers react.

Everyone's still reeling from the council's decision and its implications: the money Jeremy's spent on cows for the restaurant, the locals who won't find work there now and the farmers' co-operative that's now defunct. Charlie sets out to find a legal team to help Jeremy appeal the decision, as Jeremy and Kaleb get to work on tagging the new calves and attempting to navigate a government helpline where you're supposed to register them.
There are other useful distractions from the council in the shape of Diddly Squat's Hedge Laying Competition and a mouse that brings the whole farm to a standstill. The legal team that Charlie has assembled pay a visit. They outline their strategy for the appeal, but also the costs that come with it.