Carbon dioxide equivalents (CO2e) -the internationally recognised way of expressing the amount of global warming of a particular greenhouse gas in terms of the amount of CO2 required to achieve the same warming effect over 100 years.
Carbon footprint - researcher and writer Mike Berners-Lee explains this as; carbon = all the different global-warming greenhouse gases, footprint = a metaphor for the impact something has. By this definition, a carbon footprint is roughly the total climate change impact of something, such as an activity (flying), an item (a banana), a person, or even a whole country.
Carbon neutral - carbon neutral means that the carbon footprint of a person, organisation, good, or process is offset in some way such that the net carbon output is at or below zero. Several companies have announced plans to achieve carbon neutrality in the coming decades to reduce their impact on the climate. Achieving carbon neutrality can be accomplished through the reduction of emissions and the purchasing of carbon offsets.
Carbon offset - a carbon offset is generated by an activity that either prevents the release of, reduces, or removes GHG emissions from the atmosphere. Emission reduction projects around the world generate carbon offsets from activities such as renewable energy, biogas, and reforestation.
CFCs - chlorofluorocarbons (CFCs) are a group of chemicals that have a detrimental impact on the ozone layer in the earth’s atmosphere. The depletion of the ozone layer allows more solar radiation to reach our planet. This depletion is harmful to plants and animals and contributes to the loss of polar icecaps.
Clean energy - renewable sources of energy that generate power but do not contribute to global warming. Clean or green energy sources include wind, solar, wave, biomass, and hydro.
Climate change - is a long-term shift in global or regional climate patterns. Often climate change refers specifically to the rise in global temperatures from the mid-20th century to present.
Closed loop - a system where everything is recycled and reused.
Compostable - compostable materials are materials that have been certified to break down completely into non-toxic components (water, carbon dioxide, and biomass) that will not harm the environment, given the right conditions.
Conscious capitalism/consumerism - a form of capitalism that seeks to benefit people and the environment.
Consumers voting with their wallet – purchasing products and services that are produced responsibly.
Corporate social responsibility (CSR) - a business’s plan to reduce its impact on environmental, social, and political issues.