Thread by @YUKOWAS

Smart means nothing for example

"The most uncertainties in biomass are mainly plants, mainly trees," explains Milo. "It is not easy to estimate the total weight of tree roots, shoots, and leaves."
Researchers have estimated the total weight of plants

https://twitter.com/readwhenstoned/status/1438656030737584129

by referring to past figures that assessed the importance of trees and multiplying them with data from artificial satellite observations of the natural environment.
It also considers changes in biomass from the past to the present.

For example, since the first agricultural revolution, humankind has halved from 2 trillion tons to 1 trillion tons by cutting down plants. Simultaneously, especially in the last 100 years, humans have created an unprecedented amount of human-made objects.

Not only has production increased sharply. Those that are no longer in use are simply discarded unless they are reusable. In other words, while such human-made objects are accumulating, humans have steadily extinguished living things in nature,

and now they are about the same amount.
"I think the research team is sending a unique and powerful message this time. In 2020 or two to three years before and after, the total amount of two kinds of substances, biological and anthropogenic substances, has reversed.

We are at a turning point, "says Fridrin Klausmann, a social and environmental scientist at the University of Natural Resources and Life Sciences in Vienna.