Energy savings from home insulation "don't 'vanish' after four years" says commenter

In this week's comments update, readers are discussing whether energy savings from home insulation "vanish" after four years and Pelli Clarke & Partners' Mexico City skyscraper.
The US architecture studio has completed the 267-metre-tall Mitikah skyscraper, which is now the tallest in Mexico City.
Mitikah is located in the low-rise neighbourhood of Benito Jaurez. In order to better connect the 62-storey glass tower with the surrounding area, a series of canopies were included to create