I may well be alone on this, but looking at the big picture for a moment, if the human race really requires a celebrity advertising campaign in order to be saved, it is possible that the human race doesn’t deserve saving.
However, if we must have some sort of advertising campaign, these are the people who should be excluded from participating: Cate Blanchett, other rich people who don’t altruistically oppose a carbon tax on behalf of poor people earning less than $150000 per year, climate scientists who are, frankly, ruining it for everyone and anybody else who in any way thinks cutting back on burning fossil fuels isn’t crazy talk.
Sure, climate change may be real, but actually doing anything about it would involve quite a lot of mucking about. Best let the grandkids sort it out.