Réponse :
This document is a magazine cover by the TIME magazine published on April 28th 2008. as we can see with the big title in black ' 'how to win the war on global Warming'' is about climate change (global warming) with an illustration of soldiers lifting up a tree. The colors strongly deflect on the subject and it's importance by giving color to the tree as a symbol of life.
On top 3 other articles on other subjects.
This magazine chose it's main focus on '' special environment issue''