Projects are tools we use to meet our needs and they contribute to change the environment in which they are made, not only suffer. In fact, projects produce economic, social and natural impacts on the environment.
To produce the deliverables for which it was taken, every project uses energy (Green Impacts) and produces the SEE (social, economic, environmental) impacts. In practice of increasing the GDP and ensure social welfare consume energy and produce waste.
Today and much more in the future, energy must be well managed if we make our actions acceptable to future generations. We cannot compromise the ability to meet their future needs to ensure our current needs (intergenerational equity).
The book outlines the sustainability as a new area of knowledge within the standard of the Project Management Institute (PMI) integrated with other areas of knowledge defining the concepts, practices and processes.
The author's opinion is that our actions must always remember that the Earth is not an inheritance of our fathers, but borrowed from our children.

Domenico Castaldo, graduated in 1988 in Physics at the University of Naples, has carried out its activities from the beginning (1989) in Telecom Italia and its subsidiaries dealing with provisioning systems for telecommunications networks for national and international projects, program management of strategic projects in the fixed and mobile networks and automatic systems in data centers. Since 2010 he works in SSC (subsidiary of TI) in Infrastructure Engineering & Operations as manager of the "Asset and Operational Tools". From October 2007 he achieved the credential of Project Manager Professional (PMP(r)) of Project Management Institute (PMI) which is also a member.
Annalisa Reale, graduated in 1989 in Computer Science at the University of Bari, has started hers activity in Telesoft (company of Telecom Italy), dealing with provisioning systems for telecommunications networks for national and international projects. In 2001 she went to work in Granite/Telcordia as PM to manage Telco projects in Italy. Since 2003, she works in the field of telecommunications services such as PM and IT expert. Since 2009 she achieved the credential of Project Manager Professional (PMP) of Project Management Institute (PMI (r)) which is also a member. She studies and applies Emotional Intelligence in Project Management.