so we getting huge big up in populations and it is estimated long conference that by 2050 75 percent of the world population will live in cities already in some countries the built environment begins to look like this what does all this organization mean forth construction industry it means a number of important 70-413 thingsco2 emissions climate change what we know is 50 percent over book teak’s carbon emissions come from buildings that's constructing new buildings on the stock existing…