A single individual is a multiplicity of types and relations. I am one thing and many things. How I understand my sameness and difference in regard to other beings in the biosphere has profound moral implications – just as a society’s understanding of its unity and diversity has deep political implications. News: the American medical profession makes another plea for action, saying that our climate crisis is a health emergency. The expansion of tick populations is one serious case in point. Also: how natural lighting makes us healthier and happier, and how energy efficiency helps the political fight for climate action.