Kids aged 16+:
Answer
Kids aged 16+ were not studied by David Sobel that I know of, however I am well aware of young teenage activists such as those involved with Zero Hour who are assuming climate leadership rolls for their peers.
I have summarised suggested topics into a table of age appropriate environmental and climate topics for kids, so you can see my suggestions at a glance. The ideas suggested in the table are based on the Michelle Nijhaus article, David Sobel's Neighbourhood maps, kids TV that my kids like, observation of my children’s kindy programs, interviews with ACE educators and the Zero Hour activist kids.