Why does my city have preventable deaths if it meets the WHO guidelines?
The fact that the average %GA or NDVI levels of [...]
Why does every city have a different threshold for NDVI?
Given that NDVI generally represents the total amount of live [...]
How has the study assessed compliance with WHO guidelines on green space?
The authors of the ranking have divided urban areas into [...]
What are the WHO guidelines on green space?
WHO recommends that green spaces of at least 0.5 hectares [...]
How is the avoidable number of deaths calculated?
To calculate the number of avoidable deaths, the study uses [...]
What does “avoidable deaths” mean?
Avoidable deaths can be defined as the fraction of mortality [...]
How does green space affect health?
Natural outdoor environments including green spaces play an important role [...]
What is NDVI?
The Normalized Difference Vegetation Index (NDVI) is an indicator that [...]
What is %GA?
The percentage of Green Area (%GA) is an indicator that [...]
If the study includes more than 1,000 cities, why does the ranking only include 866?
Larger cities usually have a metropolitan area that includes other [...]
