Greenhouse gases (GHGs), including carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), absorb radiation from the sun and trap heat in the atmosphere, effectively acting like a greenhouse or a layer of insulation for Earth. In Canada 10% of GHG emissions are from crop and livestock production, excluding emissions from the use of fossil fuels or from fertilizer production. In Prince Edward Island, this number increases to 23% of GHG emissions. Of these emissions, crop production represents the primary source of GHG emissions, largely from nitrous oxide emissions arising from use of synthetic fertilizers, and CO2 release from tillage operations. While crop production is a source of GHG emissions, there are effective strategies to reduce emissions without adversely impacting farm profits. Furthermore, cropland is a potential sink for carbon dioxide, in the form of soil organic matter. This microcredential introduces the main sources of GHG emissions in cropping systems (tillage, nutrient management and pest management) and will assist learners in identifying cropland management practices to reduce GHG emissions and sequester carbon. Based on current research and best practices, learners will develop farm-specific strategies for their crops operation that reduce GHG emissions and increase carbon sequestration.