Some very exciting medals are going to be won today, including the women's 200m butterfly and the men's 100m freestyle. But we're unlikely to see the rush of record-breaking performances we saw in Beijing in 2008 — that's because in 2008 many swimmers benefited from controversial performance swim suits, which have now been banned. But how did these suits improve performance?

It's Ada Lovelace day, celebrating the work of women in mathematics, science, technology and engineering!

Today is Ada Lovelace Day celebrating the work of women in mathematics, science, technology and engineering. To join in the celebrations we bring you a selection of our favourite female interviewees from the last 15 years.