Airport powered by solar panels.

Airports can use the large open air space they have to host panels, like the one in Fresno, California, USA.

Water powered clock.

Water powered clock, nice idea..

Kansai goes with Solar power plant..

Japanese city is planning to go with a $46.5 Billion investment to go completely solar powered, quite an investment.

various storage technologies.

Various storage technologies discussed here.

Zero carbon home.

Zero carbon home, a very interesting concept..

Town running on wind power..

Generating 16M KW from wind mills for a town in Missouri that requires 14M KW per annum!. Interesting..

http://www.engadget.com/2008/05/22/rock-port-missouri-celebrates-being-100-wind-powered/

Hydrogen powered aircraft

Boeing's H2 based flight..

http://www.boeing.com/news/releases/2008/q2/080403a_nr.html

When will it be a reality is anybody's guess!