摘要: |
With countries around the world committing to achieving net-zero carbon emissions by 2050 - and some of them even earlier than that - the race is on to reduce the embodied carbon in our roads due to their construction and maintenance. That means unpicking every stage of a road's lifecyde from extraction of materials through to recycling and reuse. There have already been some claims of net-zero or carbon-neutral roads. But these often depend on carbon offsetting to get them down to the zero mark, and the celebratory press releases that announce them rarely spell out how much carbon from a scheme has been offset. |