On 29 September the University put on its largest-ever public engagement activity across several locations and well into the evening.  The Curiosity Carnival aimed to engage people from all over Oxford in the exciting and varied research that goes on within the University. Dannielle Wellington, a postdoc in the Dong lab, spent the last 4 months organising one of the highlights of the night – The Blood Factory.  In this piece she tells us more about what it was like to be involved.