Organized sport was first developed in Germany in the form of the so-called Turnvereine, and in England at the public schools. It came to France later, at the end of the nineteenth century. Despite this, the modern Olympic Games was a French invention, the result of the ambitions and efforts of an aristocratic admirer of England, Baron Pierre de Coubertin. His ideas and attitudes were in many ways characteristic of fin-de-siècle France.

The Nordic achievements in the visual arts in the age of romanticism were first and foremost accomplished by Danish artists. The great initiator was C. W. Eckersberg, who observed reality with great scrutiny and demanded of himself a faithful rendering of all the details. However, at the same time, he stuck to the classical principles of composition and omitted all accidental and ugly aspects of the motif that did not fit into his concept of an ideal picture. The principles he laid down in his art in around 1815 formed the basis of Danish (and Norwegian) painting until 1850. He introduced open-air painting as part of the tuition at the Royal Academy of Copenhagen and was, in this respect, a pioneer in a European context. During the 1820s and 30s almost all the young Danish painters were pupils of Eckersberg, and he also influenced the Norwegian J. C. Dahl. The subjects of the Danish paintings are very down-to-earth – they are first and foremost taken from everyday life. In the first decades of nineteenth century, Copenhagen had the status as the most important art centre in Northern Europe, and the art academy attracted many German artists. However, around 1840, a growing nationalism separated the Danish and German artists, and many Danish landscape painters devoted their art to the praise of Denmark. The nationalist artists, however, still stuck to the reality they had actually seen.

This article attempts to outline the development in our time of two ideas of freedom. At first, economic freedom depended on political freedom and the aim of both was moral improvement. From the beginning of the 20th century, economic freedom has become an end in itself and political freedom has given up any moral claim; both ideas of freedom are no longer what they were.

Plants cannot themselves obtain their nitrogen from the air but rely mainly on the supply of combined nitrogen in the form of ammonia, or nitrates, resulting from nitrogen fixation by free-living bacteria in the soil or bacteria living symbiotically in nodules on the roots of legumes. Increased crop yields in the twentieth century required this biological nitrogen fixation to be supplemented increasingly by the use of fixed nitrogen from chemical fertilizers. The development of the Haber–Bosch process for catalytically combining atmospheric nitrogen with hydrogen from fossil fuels to produce ammonia enabled increased crop yields. However, energy and environmental concerns arising from the overuse of nitrogenous fertilizers have highlighted the need for plants to obtain more of their nitrogen from the air by biological nitrogen fixation. New systems are being developed for increased biological nitrogen fixation with cereals and other non-legumes by establishing nitrogen-fixing bacteria within their roots. This new inoculation technology is aimed at significantly reducing the use of synthetic nitrogenous fertilizers in world agriculture.

Approaching the 21st century, humankind faces a paradox: the ocean covers more than two-thirds of the Earth's surface and has a core role in providing living and non-living resources for the world's population, but it is much less understood than the terrestrial part of our planet.

Affective processes fuel and orient social behaviour throughout life; if they did not exist, there would be no striving, no goal-pursuit, no goal-oriented action. Two interconnected brain regions are deeply involved in the socially adaptive functions of affect and emotion. Both the maturation and functioning of the brain mechanisms involved undergo the shaping influence of the manifold experience that is derived from social interactions.

According to the classical psycho-physiological theories, human and animal behaviour are dictated by inborn or acquired motivation. The sight of a serpent for example, is an inborn motivation for flight and fear in a dog, but the fear of a policeman, on the other hand, is an acquired motivation in humans. Acquired or derived motivations result from conditioning or associative procedures that come under the general heading of reflex theory. This does not take into account the notion of subjectivity, which subordinates the state to an act whose motive can always be traced back to the satisfaction of an inborn need of the species. But can we always talk about vital needs or acts that have been learnt when we see certain ways of behaving which cannot be explained or justified by any utility?

The article discusses various aspects of cultural research from the point of view of academies. More specifically it aims at outlining the history of The Royal Academy of Letters, History and Antiquities in Stockholm, which was officially responsible for the cultural heritage of Sweden until the 1970s. Since then it has become an independent learned society for the humanities and social sciences, but it still takes a great interest in ancient monuments and the protection of culturally precious milieus.

The article gives, first of all, a general presentation of the European Space Agency (ESA), followed by a more detailed outline of the ESA's Science Programme, its content, resources, organization, advisory structure and decision procedures. The various types of missions and the place they occupy in the programme are described. From a scientific point of view, these missions fit into four main themes of research, which are also potential ‘roadmaps’ for international collaboration. In the second part of the article, an outline is given of most of the projects that have been already undertaken, are in process or are being planned at the present time.