Is Nissan's Leaf the greenest of them all?

What is the most environmentally friendly car in America? That is a question that is open to a huge debate, depending upon how many different factors you consider.

The "World’s Tallest Tower" may be the greenest

When most super-tall skyscrapers are built, they are the crown jewels of the skylines in each city – acting like an exclamation mark on their perceived world status. With a newly proposed tower that is scheduled to begin this month in China, the skyscraper itself will be the skyline.