Universe :
All created things viewed as constituting one system or whole; the whole body of things

Urban planning:
The management and control of population growth in a town or city. This is designing how our towns and City’s should look, what type of buildings and facilities should be in them. If you were an urban planner how would you redesign the town or city that you live in?

Uranium:
a heavy, toxic radioactive metal used in the explosion of nuclear 

Urban parks:
green areas, trees parkland, flora and fauna in parks in cities and .towns.

Utilities:
companies (usually power distributors) permitted by a government agency to provide important public services (such as energy or water) to a region; Do you know the name of your local Utility Companies. These are the companies that provide gas, electricity and water to your home.