Vivek Wadhwa writes a guest post for Venture Beat and is very optimistic about innovation:
I can go on and on and on, but the bottom line is that we are innovating at an unprecedented rate. In this and the next decade, we will begin to make energy and food abundant, inexpensively purify and sanitize water from any source, cure disease, and educate the world’s masses. The best part: It isn’t governments that will lead this charge; it will be the world’s entrepreneurs.
It's interesting that he also identifies entrepreneurs as the builders of this future.