Net zero.
I've been looking at what I could do to get my business to "net zero", and it seems that, since we use relatively little energy - it's me, at home most of the time, with some computers, and a very occasional train journey or drive - I could achieve "net zero" by paying a couple of hundred pounds a year to a place which plants trees.
I like trees (I live in the countryside), but that doesn't feel quite right - is merely "netting off" carbon emissions enough?!
Helpful advice welcome.