Three years after the Paris Agreement was adopted, it faces a major test: the first stocktake of collective action.

Dubbed the Talanoa Dialogue and drawing on Pacific storytelling traditions, this could be – as the Fijian organisers hope – a springboard for raising ambition. Or it could be a talking shop.

In the next two weeks in Bonn, national negotiators will meet assorted academics, campaigners and lobbyists in parallel sessions to exchange ideas. They have been asked to answer three questions – the third being the hardest and most important: Where are we? Where do we want to go? How do we get there?

More than 400 submissions have been made, which give a flavour of the discussions to come. Come the COP24 climate summit in Katowice this December, these will bubble up to the political level.

Here are 11 of the key themes.