There's many measures of environmental impact, some good, some less so, some that try to be wide ranging others more focused. One of the oldest is Earth Oversho

There's many measures of environmental impact, some good, some less so, some that try to be wide ranging others more focused. One of the oldest is Earth Overshoot Day which imperfectly marks the point each year, that we pass the earth's ability to recover what we have used that year. Or that we go into ecological debt each year if you prefer. We've been running a debt, and accelerating its growth since the seventies. It gets earlier nearly every year. This year was July 29th. In 1987 it was October 23rd. So right now we need 1.7 earths to sustainably supply what we are taking. This measure focuses on renewable resources. Our point of non-sustainability may worsen markedly if we include non-renewable resources and other forms of pollution. https://en.wikipedia.org/wiki/Earth_Overshoot_Day https://en.wikipedia.org/wiki/Earth_Overshoot_Day