We need to talk about transhumanism

This weekend, hundreds of people from across the globe will gather in Madrid to discuss how to turn themselves into a new species.

The occasion is TransVision, the world’s biggest annual meet-up of transhumanists — and probably the most important intellectual summit you’ve never heard of. This year, anti-ageing specialist Aubrey de Grey will explain why he thinks most people alive today have a 50/50 chance of living to a thousand years old.