boreal, definition of

Carbon Footprint refers to the the total greenhouse gas emissions that result from a person, organization, product or service over a given time.

It tends to act as an umbrella term for any attempt to measure greenhouse gas emissions and as a result can refer to simply the emissions that result from a single activity, such as flying; the emissions that result from an organization or building over the course of a year; or the full lifetime emissions of a product or organization, including emissions from the supply chain or disposal of resources.

While carbon footprints colloquially refer to the amount of CO2 emitted, the UK Carbon Trust endorses a wider definition and considers all six of the Kyoto Protocol greenhouse gases - Carbon dioxide, Methane, Nitrous oxide, Hydro fluorocarbons, Perfluorocarbons, and Sulfur hexafluoride - when measuring a carbon footprint.

• Dusting for Fingerprints in the Holocene
  Guest Post by David Middleton Fingerprints are admissible evidence in criminal trials because of their uniqueness. The probability of two human beings having identical fingerprints is very low. Measurements of δ13C depletion have often been cited as...