Banky's 'Dismaland' and the Paris climate agreement

We start with the street artist Banksy, and his 2015 dystopian 'bemusement park'.

Then, we talk to roller coaster enthusiast Megan MacCausland, from the European Coaster Club.

Plus, we go back through the BBC archives to tell the story of the coelacanth, a fish believed to have been extinct for 65 million years.

Next, South Africa's Truth and Reconciliation Commission, set up after the abolishment of apartheid in the 1990s. This programme contains contains harrowing testimony and graphic descriptions of human rights violations throughout.

Also, the six-day IRA siege on London's Balcombe Street...