Experts used to be proud to reduce emissions by replacing leaky old buildings with energy-efficient new ones.
Now the Royal Institute of British Architects says that was a mistake.
Instead, it says we should refurbish old buildings rather than scrap them, because of the pollution that would be involved in constructing a replacement building, otherwise known as embodied carbon.
demolitions : 爆破
refurbish ：整修
scrap：拆毁，使解体
