: Soil acts like a library of Earth's past. By studying its layers and colors, scientists can read stories of ancient climates, volcanic eruptions, and even the rise and fall of civilizations.
: Some of our most vital life-saving medicines, including penicillin , were originally discovered in the organisms that live in the dirt. Dirt as a Global Hero : Soil acts like a library of Earth's past
If you were to scoop up a single tablespoon of healthy garden soil, you would be holding more living organisms in your hand than there are people on the entire planet. This microscopic world is far from silent: : Soil acts like a library of Earth's past