The elixir of life has been sought for thousands of years. Today a scientific revolution has begun. Hannah joins bio-hackers in California, and a neuroscientist along the streets of Tokyo to experience the latest age-defying techniques and examines what it means to live to a healthy, happy old age. What will extended lifespans mean for society, and will the effort all be worthwhile in the end?

The threats in the digital world are growing. As we increasingly live our lives on the internet, even the tiniest details can be exploited and weaponized against us. Hannah explores the latest artificial intelligence to figure out if the death of privacy could leave us exposed to greater threats or if a revolution in online investigative techniques could actually make our societies safer.

It’s the holy grail for limitless clean energy, but will nuclear fusion come soon enough to avoid the worst of the climate crisis? In France, Hannah Fry goes inside the largest international fusion project ever built and flies to Los Angeles to witness a new generation of private start-ups racing to put fusion energy on the grid.

Technology promises to transform the lives of millions of people living with disabilities. From coffee making robots in Japan, to revolutionary bionic limbs in New York, Hannah explores how a technological revolution could help disabled people feel more included in society or whether there are simpler ways to make progress.

The environment is in crisis, but a revolutionary new conservation concept offers hope for the future. From the overgrown Fukushima exclusion zone, to the majestic redwood forests of California, Hannah embarks on a journey into the wilderness to discover how championing nature could help to heal the environmental wounds we have inflicted on our planet.