What is the point of this effort? So what!
Of course, 8 billion humans roaming this planet have some effect on the "biosphere" and some are negative. This is research in search of relevance and useful knowledge!
What is the motivation behind: Humans are villains and need to be put on display like the pillory in the medieval ages! What garbage! Environmentalists and other ideologues have subjected humanity to this Bible like penance for decades now! Repent your sins or else! This is called pseudo religion!
The hamburger as a measuring or reference unit! The Big Mac Index was introduced in 1986 by The Economist to compare prices and exchange rates across the globe, but to take it much further like attempted here by the California Institute of Technology is questionable!
This is a bunch of pseudoscience! Just notice that they feature the mean sea level rise of approximately 3.4 millimeters per year! This is not better than a measurement error or great pretense of knowledge like the much quoted 1.5 degrees Celsius of warming that needs to be avoided by all means by tomorrow.
"... The Human Impacts Database is designed to be accessible to scientists, policymakers, and everyday citizens, and provides information ranging from global plastic production (4 x 1011 kilograms per year), to the number of cattle on Earth (about 1.6 billion), to global annual mean sea level rise (approximately 3.4 millimeters per year). ...
"For example, a friend texted me asking how to compare the impact of dairy cattle versus beef cattle," ... "
"For example, a friend texted me asking how to compare the impact of dairy cattle versus beef cattle," ... "
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