World Soil Day

FAO promote World Soil Day. In 2018 is Dec 5.

"Soil is the upper layer of earth, a mixture of organic and inorganic matter, in which plants grow. It is a finite natural resource. On a human time-scale it is non-renewable. However, despite the essential role that soil plays in human livelihoods, there is a worldwide increase in degradation of soil resources due to inappropriate management practices, population pressure driving unsustainable intensification and inadequate governance over this essential resource.World Soil Day 2017 activities aim to communicate messages on the importance of soil quality for food security, healthy ecosystems and human well-being."

There are lots of learning materials including:

YouTube Soil Organic Carbon Unlocking way to protect our world.

Soil Functions Infographic