New Scientist: WHAT is your carbon legacy – not the emissions you are personally liable for, but those of your descendants? Ask Paul Murtaugh, a statistician at Oregon State University in Corvallis. If you have a child, he says, you and you partner are each responsible for half its emissions. If that child has kids, one-quarter of their emissions are down to you, and so on. How it adds up depends on population trends and emission changes in the future. Murtaugh used UN population projections, …