Joule, a unit of energy or work in the metric system of measurement. By definition, one joule is the work done when a force of one newton is exerted over a distance of one meter. (A newton is the force necessary to give a mass of one kilogram an acceleration of one meter per second per second.) The joule is an absolute unit—that is, it is based on mass rather than weight and hence is independent of the force of gravity. Another, less commonly used metric unit of energy or work is the erg. One joule equals 10,000,000 ergs. In the traditional English system of measurement, the foot-poundal is used in place of the joule. A foot-poundal is equal to approximately 1/25 of a joule.
Laws, treaties and the limits of human technology have kept some petroleum reserves just beyond the reach of oil companies. So where are they dying to drill?
A post-apocalypse trip to the Svalbard Global Seed Vault to retrieve the seeds that will save humanity may seem like good fodder for a movie. But seed banks have important work to do right now.