This talk "Web authoring as a pedagogic tool: an example from the biosciences" by Chris Willmott and Jane Wellens was given at the Pushing the Boundaries event in January 2006. The slides describe an activity in which second year undergraduates were asked to produce websites about various bioethical issues. This activity was also described in a paper Willmott CJR and Wellens J (2004) Teaching about bioethics through authoring of websites Journal of biological Education 39:27-31. More recently we have actually replaced this task with an activity in which students produce videos on bioethical topics (see other slideshare presentations or a chronological list at http://lefthandedbiochemist.wordpress.com/talks/). These slides have recently been added here for completion - the site where they were previously available having gone off-line.