Download or read book Enough written by Bill McKibben and published by Macmillan. This book was released on 2004-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bestselling author of "The End of Nature" now looks into the not-so-distant future, when genetic science, robotics, and nanotechnology will push against the very door of humankind's immortality, and he challenges readers to confront this most profound question of their existence with care, intelligence, and ultimately, humility.