This third, and possibly final, biennial shows artists are deeply embedded in the politics of today.
What makes people more likely to trust a climate change message? If it looks too corporate, it's more likely to fail.
In awarding the 2017 Archibald Prize to Mitch Cairns, the trustees have reaffirmed a tradition of artists painting artists that began with the very first prize in 1921, writes Joanna Mendelssohn.
