Horizon - Season 56 / Year 2019

Dr Kevin Fong makes a personal journey through the moral questions about death that face not just the medical profession, but each and every one of us.

Drones are transforming our world. We use them to deliver our medicines, clean our skyscrapers and even fight fires. But there is a dark side to this airborne revolution, from a shocking rise in drone-plane near misses above our heads to last year's sustained drone disruption at Gatwick – Britain's second largest airport – that ruined the Christmas plans of 140,000 people and cost millions.

In this documentary, high-risk specialist and former Royal Marine Aldo Kane sets out to investigate the scale of the threat drones pose to our airports and skies – from rogue hobbyists to determined terrorist attacks. He explores what technologies are out there that governments and the aviation industry can turn to, to keep our skies safe.

For every pound we spend on food shopping, 77p goes to the supermarkets, giving them a huge influence over what we eat. But can we trust the supermarkets to tell us the truth about what we are buying and how it was produced? Or do their profits come first?

In an experiment to discover the hidden truths about our everyday foods, Horizon has built the first ever truly ‘honest supermarket'. Drawing on the latest scientific research and leading experts from across the UK, the team have built a supermarket where the products are labelled with the real story of how they are produced and their effect on us and the environment. We invite the British public to come in and discover the truth about their favourite foods. And in our on-site lab, new scientific discoveries reveal the food facts the supermarkets aren't telling you.

Following the teams inside Facebook, revealing a hidden technological playground. The film tackles difficult questions, like how our data is used, and also shows how Facebook works.

Proton beam therapy is the one of the most technologically advanced though expensive cancer treatments in the world - but it has the potential to save the lives of children with otherwise incurable cancers.

Over two years, Horizon follows the engineers, scientists and medics as they race to build two new centres, one at the Christie Hospital in Manchester and one at University College Hospital in London, as well as following as the first children awaiting the lifesaving treatment. This is one of the most complex challenges the NHS has ever attempted.

Horizon investigates the very latest medical and scientific research into the effects of cannabis on the brain and the body, with the medicinal form of the drug now legal. A&E doctor Javid Abdelmoneim wants to find out whether it will help or harm patients. He meets the young epilepsy patient responsible for changing the law around medicinal cannabis in the UK, and sees the remarkable effect it has on his condition. He visits a medicinal cannabis farm in Denmark to learn how a company known for growing the recreational drug are now producing medicinal cannabis to be exported all over Europe. He also travels to Israel, hoping to find out why they have been using cannabis as a medicine for more than 20 years, and meets scientists studying the safety and effectiveness of cannabis in treating pain.