What are the best Universities and who are the best professors/scientists?

I have done a lot of work on my own of various works. I don't know many professors in particular or who is leading work on various science-driver projects. I have a particular interest in city building, as well as building of national transportation and infrastructure grids, discovery of higher density forms of power generation technologies, and also development of cures for advanced diseases such as AIDS and cancer. I don't really know where to get started, I just know I have a passion for truth and a commitment to help humanity through development of people to make scientific discoveries. If I know where to go, who to talk to and work with, logistics is not a problem for me. Thanks for any help and ideas.

You have interest on various different subjects. Its great!!,
well, in universities, one cannot study in various subject at a time. there, you have to choose a path.
For city building, you can study architecture.
For, power generation technologies, you can study, electrical engineering.
For advanced diseases cure, you have to study medical science, or madicine, biology. genetic science.
As you have interst on various subject, it will be helpful to join any science,engineering, medical group,community where you have a scope to show your talent and also enhance your knowledge.
After become specialist, you can work under researcher. You have to have good contact with researcher and professors,scientists.
You can see the top 100 Global Universities from this link:
http://www.msnbc.msn.com/id/14321230/
Top ten college:
http://encarta.msn.com/encnet/department...
I really hope for the best in your future.All the best!

Albert einstein