What is exactly grenn supply chain? Is their a good reference about it?

Hi Friends, really are practices and strategies that looking for reduce the environmental and energy footprint of freight distribution. It focuses on material handling, waste management, packaging and transport..... “In general that's the idea” , because in the practices these are very hard, as the different cultures and countries today don´t are agreed with this idea, many people told that is no necesary for your company or your economical strategies….but we have to continue to improving that situacion to have a better result and return our planet a new breath.