sustainability
Meeting the needs of people today without harming the ability of future generations to meet their needs.
greywater
Gently used water from showers, bathtubs, bathroom sinks and washing machines (not toilets) that can be reused, for example to flush toilets or water gardens.
composting
Letting food scraps and yard waste break down into rich soil instead of sending them to a landfill.
active transportation
Getting around using your own energy: walking, cycling, rolling or skating.
green roof
A roof partly or fully covered with plants growing in soil.
urban forest
All the trees in a city: on streets, in parks, in yards and in natural areas.
renewable energy
Energy from sources that are naturally replaced, such as the sun, wind, flowing water and plant material (biomass).