Zoe Shipton's fascination with rocks started when she was a child and her father took her camping on a volcano. Now a professor of geology at Strathclyde University she talks to Jim al-Khalili about her research into the way that the earth faults. This has lead her to studying the aftermath of a major earthquake in Taiwan and drilling into rocks in remote parts of Utah. Recently she has been part of a Royal Society and Royal Academy of Engineering committee that has produced a report on the potential impact of fracking for gas on the UK.