In particular, *which* "objective measures of change in developed countries have mostly slowed..." ?
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
that's a relief
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.