The theme of 2013 was "The Face of Climate Change".
"International Mother Earth Day is a chance to reaffirm our collective responsibility to promote harmony with nature at a time when our planet is under threat from climate change, unsustainable exploitation of natural resources and other man-made problems. When we threaten the planet, we undermine our only home – and our future survival. On this International Day, let us renew our pledges to honour and respect Mother Earth."
Secretary-General Ban Ki-moon
Message for the International Mother Earth Day 2013
Read the blog on: http://blogs.vsointernational.org/index.php/2013/04/22/poverty-and-climate-change/