Hundreds of acres of new and formerly unused roof space is now in some way green. In 2019 green roof space in the capital was more expansive than Hyde Park, and potentially more biodiverse, too.

She said cool roofs also hold an advantage over green roofs because they’re easier to install and maintain, and cheaper. Adding reflective material to a roof costs between £13 ($17) and £89 ...

LONDON: Increasingly hot summer days in London have city dwellers seeking relief. And a new study shows the best bet might not be green roofs but white ones.