Halcyon's 52:52:52 campaign on Twitter will help you address 52 issues with 52 responses over 52 weeks.
To be a catalyst is the ambition most appropriate for those who see the world as being in constant change, and who, without thinking that they control it, wish to influence its direction - Theodore Zeldin
Dollar Street is a powerful and fascinating site, showing how people really live around the world. Dollar Street is a project from Gapminder, the foundation set up by the late, great Hans Rosling, who died a year ago from pancreatic cancer, aged only 68. He is missed.