Prof Henshaw speaks with ecancertv at Childhood Cancer 2016 about causal factors in childhood disease, most notably leukaemia.
He details the established risk of background radiation and diet, but draws specific attention to air pollution associated with childhood cancer as requiring wider public awareness.
Other causes discussed include parental exposure to pesticide, light levels experience during the night by pregnant women as a result of late-shift work, and the contentious association of childhood leukaemia with magnetic fields resulting from near-by powerlines.
Prof Henshaw also considers the work discussed by Dr Kyrtopoulous, who spoke with ecancer.
The mechanism of environmental exposure resulting in DNA damage is discussed further by Jessica Timms here.