Here is an early TED talk by Nick Bostrom of Oxford University filmed in July 2005. He talks of decreasing existential risk to increase benefits.

Brief bio from TED site here.

"Oxford philosopher and transhumanist Nick Bostrom examines the future of humankind and asks whether we might alter the fundamental nature of humanity to solve our most intrinsic problems.

Nick Bostrom, director of Oxford's Future of Humanity Institute, specializes in the big questions: What does it mean to be human? If we could live forever, would we choose to? Can we improve our human nature with technological enhancements?"