“Doing nothing is no option.” The Dutch professor Albert van den Berg from the UT in the Netherlands (University Twente) and his BIOS group have bought 43.000 kilograms of olivine-sand to compensate the CO2-footprint of their group in 2018. Being technical minded he’s interested in the more technical solutions for the surplus of CO2 in the atmosphere. “Olivine is a rock as old as the earth is, but for most people it sounds hocus pocus that it captures CO2. The weathering of olivine rock, stones and sand serves as a very slow global thermostat. By spreading olivine sand we can speed this up and make our own contribution to capture CO2”.