Small is powerful
Emerging grass shoots (Martin Kelsey) It is a week since the first rains of autumn arrived. The moment the dust dampened we imbibed that familiar alluring scent. It even has a special name, coined by Australian researchers (who know a thing or two about droughts): petrichor . The distinctive aroma of rain as it breaks the drought is caused by two substances: oils from certain plants that become absorbed by the soil and also a metabolic by-product made by actinobacteria when the soil is wet. These actinobacteria act a bit like fungi, breaking down organic matter and enriching the soil. We depend on them, yet few of us know that they even exist. Only when we exalt in the petrichor do we have an unknowing sensory connection to them. The scent of rain draws us to our roots. And, like when we gaze into the flames in a hearth or feel comforted by the embrace of savannas of the dehesas , it is a moment when that layer of modernity slips from our grasp. Seven days on small changes ...