In my life, I have been fortunate enough to become a Professor, practice as a Consultant and establish an organization as an Entrepreneur. Furthermore, my proximity to the Government, International Development Financing Institutions and Corporates, gave me unique exposure and experience. Indeed, these multiple roles have helped me acquire a holistic perspective on environmental management and sustainability. My extensive travel across continents has added yet another dimension of professional and personal experience that I really cherish. I met amazing people as I globe trotted and made wonderful friends in this process. I started writing posts on my blog site since 2014. The focus of the posts was to raise issues of concern on environmental management and sustainability relevant to India. Today there are more than 1300 followers and more than 45000 views. Enthused by this response, I released a compilation of 60 select posts early this year captioned "SIXTY SHADES OF GREEN". This book has been well received. The second book presents 25 posts that reflect my personal experiences (I call them BLUE) and another 25 posts that continue to deal with issues regarding environmental management and sustainability (the GREEN). It is really hard to put the posts in the separate boxes such as GREEN and BLUE as there are several overlaps and intersects that represent various SHADES of BLUE and GREEN. In all the posts, like before, I use humor and satire and tell the "stories". Most of the 'stories' are not necessarily real ... but created from my experiences and suitably crafted for the purpose of sharing. 'My Professor Friend' is a character I have created, essentially to provide another point of view. I simply adore this character and often wish that he was real! Sometimes I cite names of people, only to project "real world" and a feel of "authenticity". No offence is intended to anyone. And I do hope that the readers understand this perspective. The messages of the stories are the key takeaways. But these messages are often hidden. One of the characteristics of the posts is that while narrating these stories, knowledge is embedded in an implicit manner. Sometimes references are cited for further reading. The book could potentially be used as a supplement to a course on Environmental Management & Sustainability. Some of the posts could be used to open up group discussions or formulate assignments. I do hope that you enjoy this collection of 50 posts of the shades of BLUE and GREEN.