Abstract

There is a high and growing incidence of skin cancer associated with overexposure to the sun. Most of a person’s exposure occurs during their first eighteen years of life. While many children are taught to wear hats and sunscreen, studies indicate these are inadequate. There is a pressing need to improve the design of our landscapes to reduce exposure. Landscape architects can play a key role in driving this process, but only if they understand the factors determining sun protection behaviours among children in the landscape, and how to design for these. We introduced a systematic evidence-based teaching approach to landscape architecture students in New Zealand where the incidence of skin cancer is one of the highest in the world. In this paper, we describe the methods we used to integrate scientific information into a creative design process that included four design phases: (1) review, summary and translation of evidential theory into design guidelines; (2) inventory and analysis of existing schoolyard; (3) redesign of schoolyard; and (4) final design evaluation. We found this process was effective in developing student appreciation for the need to improve sun protection through design, for increasing their understanding of the evidential science, in addition to developing their ability to translate, often inaccessible, evidential data into its spatial form implications. Furthermore, the process led to a high degree of confidence and pride among many students as their resulting design solutions were not only supported by evidence but were often highly creative. Such evidence-based design courses are essential for preparing future landscape architects to design landscapes that significantly reduce the incidence and health effects of skin cancer.

Highlights

  • Overexposure to ultraviolet radiation (UVR) from the sun leads to multiple negative health effects [1,2], that are anticipated to worsen with increased UVR exposure associated with climate change [3]

  • The incidence of melanoma is significant in New Zealand, with a mortality rate significantly higher than that associated with road accidents [22]

  • We guided students in this process based on our literature review that identified four key factors to determine sun protection in schoolyards: (1) protection from direct UVR exposure; (2) protection from indirect UVR exposure; (3) thermal comfort; and (4) desirable passive and active schoolyard activities

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Summary

Introduction

Overexposure to ultraviolet radiation (UVR) from the sun leads to multiple negative health effects [1,2], that are anticipated to worsen with increased UVR exposure associated with climate change [3]. New Zealand has one of the highest incidences of both melanoma and non-melanoma skin cancer in the world [14,15]. Non-melanoma skin cancer is the most commonly occurring. While the non-melanoma type is most commonly reported worldwide [19], and does not lead to loss of life [20] it can impose a considerable economic burden on the health-care system [21]. The incidence of melanoma is significant in New Zealand, with a mortality rate significantly higher than that associated with road accidents [22]. The health care costs associated with melanoma are estimated at more than NZD 24 million per annum [23]

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