Live Earth's blog The U.S. Postal service is making a huge green
leap and showing the nation that they’re serious about going
green. The USPS building in New York City turned a massive 2.5
acre roof into a green mecca. It is the next in many
sustainability projects the USPS has taken on. The seven story
building will now have one of the largest green roofs in the
country. It will not only serve as a park and open space for
employees, but will also save energy and reduce storm water
runoff. Wal-Mart is the biggest retailer on the planet. This is
a scary thought but the nearly 40-year-old company continues to
work to become more sustainable. Most recently Wal-Mart
announced a partnership with universities around the world to
establish a green index for all the products they sell in their
stores around the world. A consortium of NGOs and businesses,
with the help of these universities is collaborating to create
the world’s first consumer sustainability index. As the
population of the world continues to grow, ind