That’s simple. We just locate the nearest parallel universe where she doesn’t exist and compare the future series of climate data from our universe to that one.
Interdimensional science is going to revolutionize the fields of sociology and economics.
The issue of climate change is routinely one of the most important issues for young people, so perhaps she played a role in that.
The question itself is pretty useless because how could we possibly quantify a single activist’s contribution to a global issue?
That’s simple. We just locate the nearest parallel universe where she doesn’t exist and compare the future series of climate data from our universe to that one.
Interdimensional science is going to revolutionize the fields of sociology and economics.
The nearest PU will crash the game. What you really want is the nearest QPU.