What is transhumanism, or, what does it mean to be human?

What is transhumanism, or, what does it mean to be human? | ExtremeTech: "Transhumanism is a cultural and intellectual movement that believes we can, and should, improve the human condition through the use of advanced technologies. One of the core concepts in transhumanist thinking is life extension: Through genetic engineering, nanotech, cloning, and other emerging technologies, eternal life may soon be possible."