the annual 'pint of science' lectures are on over 3 days this week (monday,tuesday Wednesday)
They are on various topics, all on the fore front of current scietific thinking. Admission is generally £4.00 but is by ticket only and some will sell out.
For details of specific lectures and to get tickets go to www.pintofscience.co.uk/events/sheffield ;
I may well be going to some of them!