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Among the older guests was Henry Ducker, now aged 104, who was only 19 when he joined the RAF in 1940, working as a flight mechanic.

James Ducker, who sold financial products to businesses for Lloyds in 2009, said "the approach to lending became do not lend. Beyond that, get as much money back that we've lent as possible."

Louise Hubbard, Justine Ducker and Danielle Mann, from Norwich, connected after Louise shared the story of both her daughters being diagnosed with congenital heart disease.

Professor Neil Oldham from the University of Nottingham's School of Chemistry led the study, he said: "Finding this enzyme has been very difficult and we have been hunting for it for over 2 years., The Lutzomyia genome contains an unusually high number of candidate terpene synthase genes, but thanks to the persistence of Dr Charlie Ducker, a talented researcher on the team, we were able to find the one that makes the pheromone."

The bottom line for state and federal forest managers is to prevent human-caused wildfires, Ducker said.