Only flown through by air, surrounded by vegetation and soil these huge sculptures made of wood and iron develope an impressive symbolic power in the open landscape. But also the small formats, sometimes with cereal, then filled with sugar and covered by wachs are metaphors of natural energy, concentrated dynamics and potential transfers. Formally based to a reduced, simple picture language, the objects develop first a contem- plative effect. Then slowly the overwhelming grandness of nature enters the conciousness and finally differencitated reflections about processes in art and society develop .

Plants gain their energy by assimilation or photosynthesis. The places of the photosynthesis, the energetic centres of plant organisms, are to be found in the chloroplasts. Those are in almost all cells which are open to light. A very vivid example for this we find in the white underground and the green above ground harvested sprout of asparagus. Photosynthesis means exchange of sun energy into chemical energy. Its further use is happening in building complex organical molecules out of relatively simple non-organic ions. The nutrients of plants are air gases, water and soild minerals. Carbondioxyde, water and energy are transferred mainly in carbonhydrate, but also in fat and proteins. The high percentage of fruitsugar in some pieces of fruit, the contents of fat in nuts and avocados or the  protein in soya are well known.
Different life procedures ask of specific metabolis of energy and matter especially with animals. The metabolism of renewal of parts, basic function for growth, development, reproduction and staying alive is first of all exchange from nutrients into body substance. out of storage products or of nutrients energy is produced for working power and warmth with the energy supply exchange.
Need and usage can depend on several factors. Body surface, temperature, exchange of oxygen, offer of food, movement, habernation, cold- or dry shock or puppet stillness can influence it.

Specific partial procedures of the energy metabolism are nutrition, transport of matter in the body, breathing, inner exchange of matter, excretion, warmth, steering of organfunctions, functions of the sensual

organs or the nervous system. All energy that goes to the organisms comes from the sun actually. The carbondioxyde assimilation of the autotrophic plants is exchange from sun energy into chemical energy. Heterotrophic beings (animals) on the other hand use plants and other animals as external source of energy. Waste and decay matter enter the matter circulation again.
The huge energy potentials of plants, the burnable carbons, which have been produces within the run of the history of earth, were an important basis of the industrial society of the 18th. and 19th century. Without the continuous exploition of these natural resources the level of todays technology developement would be completly unthinkable. Furthermore the intensive usage of the natural oil reservoir has opened up the options, to end up  in the modern media- and communication society with all its ambivalance of innovative outlook into the future and manyfold global problematic nature.
 
Energy and metabolism are force and drive for dynamical processes. As well are artistic developments processes of high spiritual transformations and constant exchange of thoughts, values, norms and point of views. Out of fractions and decompose products of our daily life situations artists constantly form new energy rich potentials. Those on the other hand can provoke and ask for intelligent discussion and performance.
 
A protagonist of such creative strategies was Joseph Beuys, one of his most prominent objects, the honey pump composed of electric  motors, steel, copper, fat, plexiglas and honey. During the 6th documenta in Kassel (Germany) 1977, he established it  during the 6th documenta in Kassel 1977 as well as his Freie Internationale UniversitŠt ("free international university for creativity and interdisciplinary science, registered asscociaton ") for 100 days in Fridericianum.
Anger and indignation, astonishment and amazement, enthusiasm and approval accompanied all the same the open discussion. In those days potentially natural and technical energy transferred onto an artificial level  set free thinking processes which became directional in art history.