From his mountain home in the Peruvian Andes, farmer, father, and mountain guide Saúl Luciano Lliuya is suing one of the world's largest fossil fuel energy companies, RWE, headquartered half a world away in Germany.

It's a landmark case that could radically disrupt the debate over climate action. In Part 1, meet Saul, hear his story, what's at stake, and the science fuelling his demands.

In part 2 of Climate in the Courtroom, in a rare interview on the case, you'll hear from RWE...

And meet the geographer turned data detective who's become a thorn in the side of fossil fuel companies. He's dredging up their own data to challenge them.

In part 3 of Climate in the Courtroom, we'll take you to the Philippines for a human rights showdown over climate change that is commanding attention, even in the face of President Rodrigo Duterte's death squads for drug users and jailing of journalists...