Two UK engineers plan to replace the 350 million concrete blocks manufactured in the UK each year by blocks made almost entirely of waste materials such as crushed glass, pulverized fuel ash, and bitumen, a by-product of the petrochemical industry. The ‘Bitublocks’ are about six times stronger as concrete and will not be more expensive. These eco-friendly materials should become available in about three to five years, but a house prototype should be available soon.This new material would be beneficial to the environment for two reasons. First, there will be no need for cement which generates huge amounts of carbon dioxide. And there will be no more needs to use energy to burn millions tons of waste into incinerators.