I opened up the document for International Climate Change Law, and there appeared a title that could have been written for me: "To what extent do human rights come to bear on international climate law?"
Well. There's that sorted, then. There are five other options, which I barely bothered to skim. (Though I could, instead, go on an anti-market rant by the look of things. Also tempting, but no.)
Environmental law and human rights law are trickier, as there are several options that would be happy for each.
To be sorted in due course...and then likely rambled upon via the YouTube series...