Most people nowadays understand that there is a difference between living soil and dead dirt: regardless of how many chemical fertilizers you add to the latter, it lacks the microbes with which the plants’ roots are designed to live in symbiosis, and without which the plant cannot absorb nutrients effectively. Growing crops in dirt is like trying to digest your food without any bacteria in your gut.
Worse yet, we are burning off the carbon sequestered in our soil at an alarming rate: estimates are that in another 60 years half the remaining arable soil on Earth will be gone. Think Fertile Crescent → Sahara Desert, only worldwide.
Even apart from the resulting starvation, consider the alternative: if we adopted sustainable farming practices (especially non-tillage methods) we could add soil at a rate sufficient to re-sequester carbon faster than we liberate it in all the cars on Earth. France and other countries have now committed to this approach. So there is more than one reason to grow in healthy soil.
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