net—zero, but what is that? well, like every country, the uk emits carbon dioxide, the gas that's driving up temperatures. it comes from heating our homes, getting around, generating power. it's meant to fall dramatically by 2050, but if we don't get down to literally zero, we'll have to compensate by pulling carbon dioxide out of the air. the easiest way to do that is planting trees, but on a far bigger scale than we do right now. with solar panels on the roofs and everything well insulated, this green business park in bristol is an example of lower—carbon living. cycling is made as easy as possible, so what do people make of the government plan to go green? i think that some people are quite privileged are quite privileged and they can spend that