Many of the longevity innovators in the Valley want to extend human life. But there are others who are trying to eliminate death. A lot of them.

The tech billionaires who have never been told ‘no’ are driven to tackle the most insurmountable problems. They believe they can solve death by re-engineering the human in code. Problem is, it’s unlikely to happen in their natural lifetime.

But technology is on their side. Every year, computing power doubles. Once a decade, the amount of change produces a whole new paradigm. And that is what they’re banking on.

Science, combined with the rapid acceleration of technological change will keep them alive decade on decade until such time as they can achieve ‘longevity escape velocity’ - eternal life.

In this series, technology reporter and psychologist Aleks Krotoski explores the frontiers of the extreme longevity pioneers. They've made their money in Silicon Valley. And with their technology solutions - PayPal, Facebook, cryptocurrencies - they've ushered in the world that we live in today, with all its unintended consequences. Some of them now want to solve the "problem" of aging, or even death, and they are making bigger strides than we may think.

Can they? Should they?

A Pillowfort production for BBC Radio 4

New episodes released Mondays. If you're in the UK, listen to the full series of Intrigue: The Immortals first on BBC Sounds: bbc.in/3WEQS5W