NOVELTY - An electromagnetic radiation absorbing composition comprises a carbon filler containing elongate carbon elements with an average longest dimension of 20-1000 microns, with a thickness of 1-15 microns, where the total carbon filler content is 1-20 vol.% dried, in a non conductive binder.    USE - As electromagnetic radiation absorbing composition in a radar absorbing surface, structure or body or its portions and applique film (claimed), used for wind turbines, in particular for use in onshore and offshore environments.    ADVANTAGE - The composition when applied to a surface for e.g. a wind turbine, at a selected thickness may reduce radar reflections. The reduction of these reflections reduces the structure's impact on the operation of nearby air traffic control (ATC), air defense (ADR), meteorological (MR) and Marine navigational radars (MNR). The composition absorbs known radar frequencies from known local sources, such that renewable energies systems, such as wind farms, may be more readily located near existing radar installations. Conventional radar absorbing materials comprise formulations containing ferromagnetic materials, and so are very susceptible to rusting during their lifetime. Therefore an advantage of the present composition is that the absorbing composition will not rust, as the elongate carbon elements are not be capable of reacting with air and moisture. It is well known that the formation of rust is accelerated in the presence of salt water; hence the composition is particularly useful in coastal environments.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a radar absorbing surface, structure or body or its portions comprising at least one dried coating of the electromagnetic radiation absorbing composition;    (2) an applique film comprising a composition;    (3) providing absorption of electromagnetic radiation at a selected frequency on a surface structure or body or its portions, involving determining the selected frequency, applying at least one coat of composition (C1) at a thickness which selectively absorbs at the frequency or an applique film with a thickness which selectively absorbs at the frequency, to a first side of the surface structure or body or its portions, and optionally to a second side.