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).
An EU-funded project is developing hydrophobic coatings that give ice and water droplets little chance of sticking to wind turbine blades. The new coatings should help reduce wind farm maintenance costs and increase turbine lifespan.
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