The genetic battle of the sexes and its impact on the evolution of mating systems, sex ratios and sex itself will be probed in Sexual Conflict: A new Paradigm? a Royal Society discussion meeting. May 9-10, Royal Society, London.

Animal Invasions , a scientific meeting at the Zoological Society of London, looks at the impact of alien species on native wildlife, such as the spread of North American grey squirrels across the British Isles. May 10, the meeting rooms of the Zoological Society of London.

Thirty Years On: The United States and the Legacy of the Vietnam War 1975-2005 will bring together scholars from both sides of the Atlantic to offer fresh perspectives on a defining event in the American Century that still has relevance today. May 13-14, British Academy, London.

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The growing interest in the refugee phenomenon has prompted the Forced Migration student conference, with postgraduate papers covering community conflicts, identities, refugee camps and the rights of forced migrants. May 13-14, Oxford Brookes University.

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Going Over: the Mesolithic-Neolithic Transition in Northwest Europe explores the great changes that transformed human society in the wake of the last Ice Age. May 16-18, Cardiff University.

The International Symposium on Cultural Gerontology will examine the cultural aspects of ageing, from the long-term impact of historical events on individual lives to the status and stigma of age-specific identities.

May 19-21, Open University, Milton Keynes.