At #ExtinctionRebellion camp in Berlin, I found out that I had a big misconception about tree growth.
While I knew that trees suck CO2 out of the air, I still thought that most of the "matter" that the tree is composed of comes from the soil it grows in. Apparently this is entirely wrong and trees essentially grow out of "thin air"?! Is this true, and where can I find out more about this?