BBC Horizon

Exploring the murky and fast-paced world of the hackers out to steal money and identities and wreak havoc with people's online lives, and the scientists who are joining forces to help defeat them.

New planets are now being discovered outside our solar system on a regular basis, and these strange new worlds are forcing scientists to rewrite the history of our own solar system. Far from a simple story of stable orbits, the creation of our solar system is a tale of hellfire, chaos and planetary pinball. It's a miracle our Earth is here at all.

It was one of humankind's most epic quests - a technical problem so complex that it challenged the best minds of its time, a problem so important that the nation that solved it would rule the economy of the world. The problem was navigation by sea—how to know where you were when you sailed beyond the sight of land - establishing your longitude. While the gentry of the 18th Century looked to the stars for the answer, an English clockmaker, John Harrison, toiled for decades to solve the problem. His elegant solution made him an unlikely hero and remains the basis for the most modern forms of navigation in the world today. This film will be both a celebration of Harrison's invention and an adventure story. An expedition on a period sailing vessel as it sails the open sea will demonstrate the life and death importance of finding your longitude at sea.

British journalist and physician Michael Mosley sets an ambitious goal: to become healthier and lose weight while making as few changes as possible to his life. In working toward these goals, Mosley discovers a powerful new science behind the old idea of fasting, a program that still allows him to enjoy his favorite foods. He takes a road trip across the U.S. to investigate how a little hunger can turn on the body’s “repair genes” and, of course, tries the new science himself. Mosley learns that a diet based on feast and famine has powerful effects on the body, reducing the risks of heart disease, diabetes and some cancers. The diet seems to pack the anti-aging clout of calorie restriction while still allowing for a taste of the good life. And it turns out to be not only good for the body; it may also be good for the brain.

In medical science, there’s been no longer harder fight than against malaria. This is the inside story of a historic new vaccine - from the Oxford lab behind the COVID jab.

Horizon visits state-of-the-art laboratories and uses CGI to recreate the science-fiction-worthy weather experienced on other planets.

A new era in the search for alien life has arrived as numerous bodies of life-sustaining water have been found all over our solar system.

Six months after the explosions at the Fukushima nuclear plant and the release of radiation there, Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation. Jim draws on the latest scientific findings from Japan and from the previous explosion at Chernobyl to understand how dangerous the release of radiation is likely to be and what that means for our trust in nuclear power.