measuring sustainability

• Ecological footprint is the amount of bio productive land required to produce resources and absorb waste, using common technologies and management techniques, and is measured in global hectares.
• Biocapacity is the amount of bio productive land available to produce resources or remove waste, and is measured in global hectares.
• Sustainability is achieved when the ecological footprint is equal to or less than biocapacity.
• If no changes are made by 2050, we will need 3 earths of land to support us.
• Ecological footprint represents the amount of land needed to support us, the amount of energy, waste and resources we need or produce.
• Biocapacity per capita is the amount of bio productive land available to an individual, and is measured in global hectares.
• Ecological footprint minus biocapacity per capita equals reserve or deficit.
• Overshoot day is the day when the world exceeds its biocapacity.
• In 2023, overshoot day was August 2nd.
• Overshoot day is easier to explain and visualise.
• Living planet index measures sustainability.
• There are 4271 species that indicate biodiversity.
• Living planet index monitors indicator species.