Trade involves the transfer of goods or services from one person or entity to another, often in exchange for money. A system or network that allows trade is called a market.
The product of mental labor — science — always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.
Karl Marx Addenda, "Relative and Absolute Surplus Value" in Economic Manuscripts (1861–63).
Safety is a major challenge for the new generation IV (Gen-IV) fast neutron reactors. Ongoing research and development (R&D), supported by the EU, will update or develop existing computer codes to accurately model innovative reactor designs and accident scenarios.