This decrease in fertility is not happening fast enough. The urgency of realising the reductions in fertility projected,
and more, is made clear by the UN: "A fertility path half a child below the medium [variant projection] would lead to
a population of 8 billion by mid-century. Consequently, population growth until 2050 is inevitable even if the decline
of fertility accelerates." But if the world's mothers reduce the number of children they have, there could be 1.2 billion
fewer climate changers in 2050 than projected.