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Members of the Tertiary Sisters of St. Francis in Shisong, Cameroon, meet during a previous Earth Day commemoration. The congregation's many environmental projects include community gardens that serve as a demonstration site to boost soil fertility. The gardens show that the soil can become fertile again through purely organic manure. (Courtesy of the Tertiary Sisters of St. Francis)
Members of the Tertiary Sisters of St. Francis in Shisong, Cameroon, meet during a previous Earth Day commemoration. The congregation's many environmental projects include community gardens that serve as a demonstration site to boost soil fertility. The g