The world is going green – literally, in all kinds of places that were desert-like before.
Have you ever been in an airplane crossing the semi-arid foot hills of the Rocky Mountains and looking down at the ground? You’ll have seen large green, circular patches between the miles of dry brown land. Those patches are irrigated fields sprouting vegetables and fruits of various kinds. They are providing the ample food for the supermarket near you – and the world at large.
What Plants Need to Grow
Plants need just a few things to grow, water, nutrients, and sunshine. Carbon dioxide (CO2) is just one of those vital nutrients. However that CO2 has become more readily available, thanks to mankind’s combustion of fossil fuels.
Just a couple of hundred years ago, with atmospheric CO2 down to 0.02- 0.03{154653b9ea5f83bbbf00f55de12e21cba2da5b4b158a426ee0e27ae0c1b44117}, the globe’s plants were nearly starved of that vital CO2 nutrient. Its natural sources, volcanoes and fumaroles, just could not keep up supplying enough CO2 to the atmosphere to even maintain a steady state between production and consumption. You might say the consumption side took over – somewhat reminiscent of today’s economics.