US Navy New Warship, Green Technologies Exist - But Used for War

https://ca.finance.yahoo.com/news/us-navys-stealthy-destroyer-zumwalt-christened-maine-champagne-131800491.html

Follow the link above to read the relative posting found on Yahoo.

"The first U.S. ship to use electric propulsion and produces enough power to one day support the futuristic electromagnetic rail gun"

According to this news, there is proof that technology for alternative power and energy is available but seems it is only available for warships.  What is humanity's goal, are we really striving for peace or just striving to survive the many wars created by those who think they have the rights to own the world?

You can read more about the propulsion system here.. http://en.wikipedia.org/wiki/Zumwalt-class_destroyer