[Gideon7]

During the Jurassic era the CO2 levels were 400 times higher than they are today. There were lush jungles that could sustain 100-ton dinosaurs. The biomass of the planet was at a record high. The Earth was never more alive than it was then.

CO2 levels today are about 0.04% (400 parts per million), which is just enough for plants to survive. If it drops to 150 PPM or lower plants will starve and die worldwide and render 90% of all species extinct (which has also happened before).

More CO2 improves crop yield, increases forestation, and has many other benefits.

[daniel1212]

During the Jurassic era the CO2 levels were 400 times higher than they are today. There were lush jungles that could sustain 100-ton dinosaurs. The biomass of the planet was at a record high. The Earth was never more alive than it was then. CO2 levels today are about 0.04% (400 parts per million), which is just enough for plants to survive. If it drops to 150 PPM or lower plants will starve and die worldwide and render 90% of all species extinct (which has also happened before). More CO2 improves crop yield, increases forestation, and has many other benefits.

Hey, I am still waiting to plant Tomatoes here in Zone 6!