Doing some research for next Saturday's learning church, whilst also juggling various other parish matters - including some sudden seriously bad news for a colleague - and finding that it is all rather an accumulation of sadness.
Good summary of the line that I'll be taking is here.
In short: the human race is in 'overshoot' - there are more of us than can be sustained, and the chances are that there will be a significant reduction in human population.
Let's get depressed.
(I'll cheer up again later)