Everyone living on the earth acts not only as an environmental destroyer but also as a victim of environmental resources and even as a role to resist and change the environmental damage. This book mainly relates to special days themselves as well as reminds people of the green issues behind it. Therefore, we expect that when readers are reading this book, their eyes would also fall on a green day, the content of the chapter would begin to guide them to further understand the origin and promotion history of this special day, and, above all, the related environmental issues extended from this special day. Most “Green Days” selected by this book are annual days and since this book has collected ten green days together, they can be functioned a calendar to guide the readers along starting from wetlands to understand the earth where we live on through natural resources like forests and water and further learn how to coexist peacefully with the other inhabitants on earth by sustainability issues like biodiversity, environment, marines. And, in the end, it goes back to the immediate everyday life issues closely related us like cleaning, mitigation, and food. Exactly stated on the attached label of our book name “Green Day,” it is 10 special days to guide you to be c to the earth, nevertheless, it is also a green “memo,” which teaches readers how to treat our environment well where we are living on.

green issues;be functioned a calendar;close to the earth