How the World Really Works: The Science Behind How We Got Here and Where We're Going
Vaclav Smilamazon.com
How the World Really Works: The Science Behind How We Got Here and Where We're Going
never came to pass, but even so we use a lot of concrete. Every year, between replacing or repairing existing roads, bridges, and buildings and putting up new ones, America alone produces more than 96 million tons of cement, one of the main ingredients in concrete.