5/5 Professor Iain Stewart visits the UK's home of nuclear science in Cumbria.
4/5 Prof Iain Stewart explores stem cell technology at the CRM in Edinburgh.
3/5 Prof Stewart visits Rothamsted Research, the world's oldest agricultural research centre.
2/5 Prof Iain Stewart is amazed how nano materials may revolutionise computers and solar power
1/5 Prof Iain Stewart explores genetic approaches to the treatment and prevention of cancer.