We’ve all been there. The trees we enjoyed climbing as kids no longer beckon quite so beguilingly. The fruits and nuts that were such delicious treats have largely lost their appeal. If we’re honest with ourselves, we are forced to admit: We’re in something of a mid-life crisis. Yes, getting older can feel oppressive to an orangutan. We can now add the middle-age blues to the list of experiences we mistakenly thought were exclusive to humans. In a paper just published in the Proceedings of the National Academy of Sciences, an international research team reports the well-being of ... Read More