Research on the responses of plants to increasing levels of carbon dioxide has largely assessed physiological, phenotypic, and community-level effects. Little attention has been directed to… (More)
The risk of ozone injury to plants was assessed in support of the National Park Service's Vital Signs Monitoring Network program. The assessment examined bioindicator species, evaluated levels of… (More)
The Children's Health Resource Centre was created to give children, youth and parents access to information concerning the health issues of children. As humans, whether we are children or adults,… (More)