Nice to see someone made game about going green. Unfortunately, can't test physical format games now :) Downloaded cards to check what's on them - yep, there is a lot of information, so game has quite big educational value. Judging on rules I believe that using these rules many games could be made, just with different cards - so it does not look very unique.
According to art in cards - you mixed photos, hand drawn pictures, and, possibly some AI generated pictures (for example, one with bubble globe and tree in hand, page 130, but not sure - might be good photoshop too). Mixing drawn pictures and photos does not effect game looks very well, so I'd suggest to use only one of these type of imaging to make it look more unique.
Big plus for the idea of giving information about going green in fun format :)