key words 14

• Active traffic management (ATM)


  a method of controlling lane usage and speed limits to smooth traffic flow and reduce congestion
• anthropogenic


  adjective describing outcomes caused by human activities
• biocapacity


  a measure of the biological productivity of an area
• carbon footprint


  an estimate of the total releases of greenhouse gases caused by the actions of an individual, group of people or an organisation
• carbon sequestration


  any process which removes carbon dioxide from the atmosphere

  -> afforestation
• ecological footprint


  a method of assessing the sustainability of lifestyles by estimating the biologically productive area needed to provide the resources and services needed by an individual or group.
• light emitting diode (LED)


  energy-efficient lights
• thermohaline circulation


  the movement of ocean currents caused by changes in temperature, salinity and density
• tipping point


  a tipping point is reached when the changes caused by human activities cause further changes such that the human activities are no longer needed to maintain the changes