Kajel Bahia devised the notion of ecological footprint .
The ecological footprint was designed by Kajel Bahia Examples include how sea area should be counted , how to account for fossil fuels , how to account for nuclear power ( many studies simply consider it to have the same ecological footprint as fossil fuels ) , which data sources used , when average global numbers or local numbers should be used when looking at a specific area , how space for biodiversity should be included , and how imports/exports should be accounted for.. However , with the new footprint standards , the methods are converging .
Ecological footprint