*human population continue to explode.
I think you need to look at the data on that one.
No one wants kids anymore, and the data is showing world wide. Japan is panicking quite a bit over it and the US should be but our immigrants have always helped keep the numbers up.
I think we will at some point move away from toxic metals and more into a plant based tech at some point.
Some commercial uses in the works: https://www.plant-e.com/en/