This Plenary Lecture summarizes the seismicity of Mars recorded by the NASA InSight mission, which landed on Elysium Planitia on 26 August 2018. Equipped with a highly sensitive seismometer, the lander has been successfully recording the seismicity of Mars for over three years. Different types of marsquakes have been identified, including low-frequency events with mantle-going phases and shallow high-frequency events characterized by crustal propagation. More recently, a few meteoric impacts have also been identified. Over a thousand events have been recorded, with magnitudes reaching up to MW 4.7. Here we review the techniques used by the MarsQuake Service to locate and characterize marsquakes and the active crustal processes in different areas of the red planet, and we discuss the different types of marsquakes.

This paper deals with the transfer of Arab visual theory in the Middle Ages, as it is believed that the cultural significance of this transfer needs a new emphasis. Mathematical perspective was invented in Florentine Renaissance Art. However, except in the history of science, it is a little known fact that this visual theory was based on the Book of Optics, written by Ibn al Haithan, also known as Alhazen, and was translated, probably in Spain, with the Latin title Perspectiva. We therefore can speak of a double history of perspective, as visual theory and as pictorial theory. The main argument is to identify the importance of images, which separate Arab thought from Western thinking. It was the transformation of mathematics into art, in the Western sense, that allows us to distinguish two different cultures. In this process, the invention of mathematical space by Biagio Pelacani was an important step. Thereafter, the gaze and its looking space became a new concern of the Renaissance.

There is no culture that is both general throughout Europe and unique to Europe. So we cannot speak of a ‘European civilization’ in the same sense as in phrases such as ‘Chinese civilization’ or ‘Jewish civilization’ or ‘French civilization’. It is therefore prudent not to appeal to the concept of a European civilization in an attempt to justify the attempt to create a European Union or to accelerate the process of Europe-wide state-building. Nor should we feel constrained by such a concept: the future of a European Union should not be influenced by current or traditional ideas of what European civilization is, since such ideas are mistaken: it can be as protean and pluralistic as we wish to make it.

Expected utility theory tells us how we should make decisions under uncertainty: we should choose the option that leads to the greatest expectation of utility. This may, however, not be the option that is likely to produce the best result – that may be the wrong choice if it also creates a small chance of a great disaster. A small chance of disaster may be the most important consideration in decision making. Climate change creates a small chance of disaster, and some authors believe this to be the most important consideration in deciding our response to climate change. To know whether they are right, we need to make a moral judgement about just how bad the disaster would be.

This paper is based on recent research into the small, highly endangered language Giernesiei1 (Guernsey, Channel Islands).2 Language documentation has found unexpectedly rich variation and change in Giernesiei usage, not all of which can be accounted for by regional and age-related factors. At the same time, our research into language ideologies and efforts to maintain and revitalise Giernesiei has revealed deep-seated purist or ‘traditionalist’ language attitudes that resist and deny language change. This nostalgic view of language and culture can hyper-valorise ‘authentic’ traditions (arguably reinvented3) and can lead to reluctance to share Giernesiei effectively with younger generations who might ‘change the language’, despite an overt desire to maintain it. This mismatch between ideologies and practices can be seen at language festivals, in lessons for children, and in the experiences of adult learners who were interviewed as part of a British Academy-funded project. I present a taxonomy of reactions to variation in Giernesiei, which confirms and extends the findings of Jaffe4 in Corsica. I also discuss recent revitalisation efforts that try to bring together older and ‘new’ speakers and promote the role of adult learners and ‘re-activate’ semi-speakers. The findings support the view that full evaluation of language vitality should include documenting the processes and ideologies of language revitalisation.5,6

Symmetry and chemistry have been in a fruitful interplay, initially in spectroscopy and crystallography, lately in more traditional domains of chemistry, such as reactivity and conformational analysis. A simple phenomenological approach suffices to get an idea about the symmetries of molecules whereas group theoretical approach greatly facilitates the understanding of molecular vibrations, electronic structure, and the mechanism of chemical reactions. In our discussion, the multi-level relationship between symmetry and chemistry is demonstrated by a sampler of examples, including the variations of symmetry of free molecules and molecular packing in crystals. Symmetry considerations continue to assist chemistry in systematizing and interpreting observations and also in discovering new reactions, molecules, and other materials.

The relations between different countries and continents have always been important politically and scientifically. This applies in particular to relations between Turkey and Europe. Through centuries, the Ottoman Empire was seen as the main enemy of ‘Christian Europe’. In this paper, three topics are discussed: (1) European, and in particular Austrian and German, attitudes towards Turkey's membership in the European Union. It is argued that the dominantly negative attitudes in this regard do not indicate a generally negative attitude towards Turkey. (2) Some of the reasons for the negative view of Turkish EU-membership in many EU countries are discussed. (3) In conclusion, three issues are taken up: the relevance of Turkish EU-membership; the reasons and persistence of national and ethnic stereotypes; the relevance of the time factor in international relations.

From the late 1870s until his death in 1901, the Irish physicist G. F. Fitzgerald was one of the most active and influential proponents of Maxwell's theory of the electromagnetic field. Along with Oliver Lodge, Oliver Heaviside, Heinrich Hertz, and other ‘Maxwellians’, Fitzgerald took the lead in extending Maxwell's theory, clarifying its expression, and subjecting it to experimental test. The surviving correspondence of this Maxwellian circle provides a window into the workings of late Victorian physics and into the private side of scientific communication.

During the middle decades of the twentieth century, the Scientific Revolution came to be understood as a key period in Western history. Recently, historians have cast doubt upon this category, questioning whether the relevant institutions and practices of the seventeenth century are similar enough to modern science to warrant the label ‘scientific’. A central focus of their criticisms has been the identity of natural philosophy – the major discipline concerned with the study of nature in the early modern period – and its differences from modern science. This paper explores natural philosophy and its relation to philosophy more generally. It concludes that a significant philosophical revolution took place in the seventeenth century, and that this was important for the subsequent emergence of modern science.

There are powerful limits to international humanitarian law. With reference to theories of international relations and to empirically observable patterns, this article shows the inability of legal norms and structures to influence the behaviour of the world's most powerful states and their allies. There are also restrictions on the capacity of trials conducted according to humanitarian law to fulfil the social functions increasingly attributed to them, including the re-education of populations complicit in mass crimes, some measure of catharsis for the victims of such crimes, and the reintegration of erstwhile ‘victim’ and ‘perpetrator’ communities.

In his huge ‘Pharmacognosy’ the universal scholar al-Bīrūnī (973–1048) equates, in 1116 paragraphs, about 4500 names of medicinal plants, and also foodstuffs, in 27 languages. Before the introduction of an internationally recognised botanical nomenclature this kind of literature served a practical need. Al-Bīrūnī’s work is now a mine of information for the linguist and also for world history. It testifies, for example, to the fact that the spoken Greek vernacular of the time had become already quite different from the classical language. Thus, the Byzantine emperors in their efforts to defend their state helped to conserve a cultivation of the humanities, which would have disappeared under Muslim rule. In the article on ‘capers’, al-Bīrūnī also offers a rare insight into a seemingly relaxed bit of small talk between Constantinus VII and an Arab ambassador.

The interconversion of military and civilian scientific research has been discussed in various contexts. Fritz Haber was concerned with the military application of poison gas research in the First World War. It is less well known that, simultaneously, he also initiated modern pest control by toxic substances, thus taking advantage of the military development for civilian purposes. However, the case of Haber shows that, in the Age of Mass Extermination, such conversion cannot be easily kept under control.

Genetic engineering (GMO-technology) offers great opportunities to contribute to the public good by improving public health, e.g. by improving the micro-nutrient status of poor populations, cost effectively and – therefore – sustainably. The prime example for such a project from the public domain for public good is ‘Golden Rice’ (www.goldenrice.org). There are exclusive public funds involved (from altruistic organizations), no dependence from industry except for in-kind support and help in acquiring free licenses for humanitarian use. There is no financial reward for anyone involved. The only beneficiaries are the poor in developing countries. Theoretically, when considering the arguments of the anti-GMO lobby, this is an ideal application of GMO-technology. However, Golden Rice is considered a Trojan Horse, which must be prevented under all circumstances. The consequence: millions of avoidable blind and dead children. The author considers those who are responsible for this avoidable suffering of many innocent children (and mothers at childbirth) a crime to humanity. There are those who commit this deliberately and those who are participating passively, such as numerous ‘humanitarian organizations’ and ‘decision makers’ in politics and elsewhere. There is a wealth of scientific information and broad consensus that GMO-technology is at least as safe as any other technology involved in any context with our food or our environment. What we experience here is an example of ‘unreason’ and a perfect example in the context of The March of Unreason. Our ‘enlightenment’ and science-based successful European culture is on the verge of being replaced by unreason-based failure and lack of culture.

One can find many proposals for policy responses to global environmental problems. Different disciplines – notably economics, geography, innovation studies, policy and political sciences, psychology and sociology – offer partly inconsistent advice. This undermines the social-political acceptance of policies as voters and politicians are likely to be left confused. To decide about an adequate sustainability policy mix we need to concur on the core problems such a mix has to tackle. I address four of these hereafter. Each one involves important issues of disagreement as well as unresolved questions.

The aim of the paper is to present the current trends in the migration flows of Central and Eastern-European (CEE) countries in the light of socio-economic transition and core-periphery relations. To view migration as a broader process of social and economic development, post-accession mobility information will be analysed within a multi-scalar approach, across time and space, considering first the migration pattern from the CEE countries towards other EU regions in general, and then with a special emphasis on Romania in the light of the 2007 EU enlargement process. The spatial variation of migration was investigated using Moran’s I and Gi* statistics, which is a useful tool for identification of spatial patterns. Alongside the analysis of migration processes between receiving and sending areas (core and periphery regions) the author will discuss how the position of the core and periphery could change, with economic development taking place in a number of periodic waves. Based on the transnationalism paradigm, the author will also highlight the impact of migrants’ changed mobility practices and behaviour on the locality of origin.

In the wake of the Maastricht Treaty on European Union the legitimacy of European institutions and their law-making powers are questioned in all Member States. These questions are related to the understanding of sovereignty as the final arbiter of right and wrong in the democratic nation state. The role of law in this context is analysed by relying on European thinkers of the enlightenment who have shaped our understanding of law and legal systems to this day: Jeremy Bentham, Jean-Jacques Rousseau and Immanuel Kant. An analysis of the case law of the European Court of Justice reveals the constitutionalization of European law. The chain that bound sovereignty and law together was broken when the Court ruled that the Treaty confers upon citizens the right to enforce specific Treaty obligations of Member States in their domestic Courts of law. The task for the Community is to develop standards of Community law that limit the Community's jurisdiction just as it limits the power of Member States.

We imagine crystals as Platonic ideals of perfection, but real ones are always faulty and impure. Most could not even have formed without faults. The endless variety of crystalline nature, leading for example to mechanical strength, brittleness, plasticity, transparency, reflectivity, colour, electrical conductivity, transistor behaviour, phosphorescence and photographic sensitivity, is largely brought about by faults and impurities.

The Nordic or Scandinavian countries represent variations on general European patterns of state and nation-building and political culture. Denmark and Sweden rank among the oldest and most typical of nation-states together with France, Britain and Spain and should be studied with the same questions in mind. Today, however, a sort of trans-state common Nordic identity coexists with independent national identifications among the Scandinavians. Nordic unity is regarded as a viable alternative to European culture and integration by large numbers of the populations. There has never existed a ‘Scandinavian model’ worthy of the name ‘model’. Because of a series of changes in great power politics in the 18th and 19th centuries, the major conflicts in Europe were relocated away from Northern Europe. This resulted in a virtual ‘neutralization’ of the Scandinavian countries north of the Baltic Sea. Today, the much promoted ‘Nordic identity’ reveals itself only through the nation-states. The ‘Association for Nordic Unity’ (Foreningerne Norden) was set up in 1919 only after all five Nordic countries had achieved independent nationhood: Norway in 1905, Finland in 1917, and Iceland in 1918 (the latter only as home rule to be followed by independence in 1944). The very different roads to independent nationhood among the Nordic countries and the idea of a common Nordic identity can be traced back to its beginnings in the 19th century

This article outlines the lecture presented by Robert Zorec at the Academia Europea meeting in Liverpool on 19 September 2008, four decades after the Sherrington Lecture of Bernard Katz who, together with his colleagues, developed a number of paradigms addressing vesicles in chemical synapses. Vesicles are subcellular organelles that evolved in eukaryotic cells 1000 to 2000 million years ago. They store signalling molecules such as chemical messengers, which are essential for the function of neurons and endocrine cells in supporting the communication between tissues and organs in the human body. Upon a stimulus, the vesicle-stored signalling molecules (neurotransmitters or hormones) are released from cells. This event involves exocytosis, a fundamental biological process, consisting of the merger of the vesicle membrane with the plasma membrane. The two fusing membranes lead to the formation of an aqueous channel – the fusion pore – through which signalling molecules exit into the extracellular space or blood stream. The work of Bernard Katz and colleagues considered that vesicle cargo discharge initially requires the delivery of vesicles to the plasma membrane, where vesicles dock and get primed for fusion with the plasma membrane, and that stimulation initiates the formation of the transient fusion pore through which cargo molecules leave the vesicle lumen in an all-or-none-fashion. However, recent studies indicate that this may not be so simple. Here we highlight the novel findings which indicate that fusion pores are subject to regulations, which affect the release competence of a single vesicle. At least in pituitary lactotrophs, which are the subject of research in our laboratories, single vesicle release of peptide signalling molecules involves modulation of fusion pore diameter and fusion pore kinetics.