Créditos das fotos John Englart (Takver) on VisualHunt / CC BY-SA United Nations Photo on Visualhunt.com / CC BY-NC-ND Tali C. on Visual hunt / CC BY-NC-SA dan.boss on Visualhunt / CC BY-NC-SA United Nations Photo on VisualHunt / CC BY-NC-ND jonathan mcintosh on Visual Hunt / CC BY University of Essex on Visual Hunt / CC BY Steve Rhodes on Visualhunt / CC BY-NC-ND ResoluteSupportMedia on VisualHunt.com / CC BY Photo on Visual hunt Photo credit: Instant Vantage on Visual hunt / CC BY-SA Photo credit: DVIDSHUB on VisualHunt.com / CC BY
