Cement emits 7% of global carbon dioxide, more than all trucks in the world

About two-thirds of the polluting gases that come from cement production stem from burning limestone.

The most astonishing thing about cement is how much air pollution it produces.

Manufacturing the stone-like building material is responsible for 7% of global carbon dioxide emissions, more than what comes from all the trucks in the world.
 

And with that in mind, it’s surprising that leading cement makers from LafargeHolcim Ltd. in Switzerland to Votorantim Cimentos SA in Brazil are finding customers slow to embrace a greener alternative.

Their story highlights the difficulties of taking greenhouse gases out of buildings, roads and bridges. 

After wresting deep cuts from the energy industry, policymakers looking to extend the fight against global