World Soil Day

Plants nurture soil-living organisms — only 1% of these soil microorganisms having been identified to date (compared to 80% of plant species). This vast world constitutes soil biodiversity — 25% of the planet’s biodiversity — and determines the...

International Day for the Preservation of the Ozone Layer

As explained by the National Aeronautics and Space Administration, ozone is a gas made up of three oxygen atoms (O3) that occurs naturally in the upper atmosphere — called the stratosphere and at 10-50 kilometres altitude.  In the lower atmosphere (the...