`` The strength of these images is , I think , the fact that they are wordless and global , and their overall meaning can be grasped instantly by almost anyone without having to describe them with labels and legend . '' A new series of computer visualizations show impact of human technology on earth . Score: 6 U.N. global population to reach seven billion by end of October 2011 .
A new series of computer visualizations show impact of human technology on earth . Score: 6 U.N. global population to reach seven billion by end of October 2011 .