Engineering Immortality: The End of Aging?

Are there limits to the human lifespan? Is it possible to stop the process of aging? On average, humans now live far longer than at any point in our history thanks to science and technology. On the horizon, advances in new drugs and medical techniques promise a revolution in how we live, age and die. But these advances may come at a steep cost. In this program, experts explore future challenges while debating the ramifications of an immortal society.