We have entered a period of history when our growing ability to transform nature has begun limiting our freedom, rather than expanding it. Global warming is a point in case. But even more dangerous for our freedom are the developments in biogenetics and the dawn of a post-human era. The promise of these advances is freedom from our nature: limited intelligence, vulnerable to disease, and death.  But the more we learn how to alter our own nature, the less free we will become. We will be transformed into just another object that can be manipulated and reconstructed, argues Slavoj Žižek, following on from his debate with Yuval Noah Hararri at HowTheLightGetsIn. Watch the original debate here.