Gapminder (of Hans Rosling fame) does a good job of this, I think. Although they do not shy away from mentioning what could be better, they do a good job of hig

Gapminder (of Hans Rosling fame) does a good job of this, I think. Although they do not shy away from mentioning what could be better, they do a good job of highlighting positive developments on a larger time scale that often go overlooked because they're slow-moving.