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Male butterflies have genes which give them a sexual preference for a partner with a similar appearance to themselves, according to new research.

New findings suggest that the male body tries to “optimise” self-perceived improvements in social status through hormonal shifts that promote “short-term mating”.

David Norman (Sedgwick Museum of Earth Sciences) discusses how palaeontologists can interpret fossil footprints to find clues as to whether dinosaurs performed dance-like mating rituals.

Jacob Dunn (Division of Biological Anthropology) discusses why sperm are the most diverse cells found among animals.

New research indicates that social monogamy evolved as a result of competition for females.