ecosystem, definition of

A green roof is a conventional roof covered with a layer of vegetation, also known as “living roofs”. Green roofs serve several purposes for a building, such as absorbing rainwater, providing insulation, creating a wildlife habitat and helping to lower urban air temperatures and combat the urban heat island effect. There are two types of green roofs: intensive roofs, which are thicker and can support a wider variety of plants but heavy and require ongoing maintenance, and extensive roofs, which are covered in a light layer of vegetation and are lighter than an intensive green roof.

• Eco Tourism, how to minimise your effects
  Eco tourism is about enjoying remote places and destinations whilst minimising your environmental or cultural impact. This article goes into some detail on this subject.

• "The Accidental Ecosystem" that's right outside your door
  Raccoons raiding your garbage, squirrels on wires, coyotes scouting for pets left out after dark -- they’re not the urban riffraff of the animal world. According to author Peter S. Alagona, “The recent explosion of wildlife in American cities is one...
• Check out this farm's holistic approach to agriculture
  How often do you think about where your food is sourced from? Chances are, not all that much. However, sustainable food sourcing is becoming increasingly important. Like other products we consume, the foods we eat also have individual carbon footprints....