Things have slowly drifted from "we might wanna consider doing something before this becomes a problem" to "we need an immediate and concrete plan" to "anything short of immediate and drastic action is killing and will continue to kill people" over the course of the last decade or two.
Fossil fuels.
Things have slowly drifted from "we might wanna consider doing something before this becomes a problem" to "we need an immediate and concrete plan" to "anything short of immediate and drastic action is killing and will continue to kill people" over the course of the last decade or two.