Concrete is often used for outdoor projects like patios, walkways and for other pavement projects. While concrete is a durable material, its production is energy-intensive and its production involves high emission levels of pollutants -- one tonne of cement produced means 2 tonnes of CO2 released into the atmosphere. Concrete also inhibits ground access to water. This makes concrete less environmentally-friendly than other options. If you are set on the use of concrete though, make sure you aren't likely to get rid of it any time soon. If you keep it for years to come then it could end up being a better long term solution. There are also some more green variations of concrete you can consider.
Walkways and patios can be paved with permeable concrete pavers. These solid pavers are installed over sand or cut stone. Water drains between the slabs, thereby adding to groundwater resources. Water that goes into the ground beneath permeable concrete pavers promotes cooler pavement.
Pervious concrete, made of stones and cement, allows drainage as well and is EPA (Environmental Protection Agency) recommended. Permeable concrete pavers and pervious concrete are only two examples of green ways to improve an outdoor area. Explore the possibilities.
Find what suits specific needs and share the information with neighbors and the greater community. House-by-house, yard-by-yard, green remodeling makes a difference in the new world of global climate change and other environmental challenges.