"They provide a lot of what we call ecosystem services," he said. "So, they provide a lot of benefit to everyday Canadians' lives, even if you don't live or work in the grasslands." They store and filter water, preventing both floods and droughts. They improve water quality. They keep soil in place, because of extensive root networks, so there's less erosion along lakes and rivers.
Testing the waters: Do Regina's asbestos-cement water mains pose a risk?
Snaking beneath Regina's streets are 600 kilometres of water mains built with asbestos-cement. That's about 60 per cent of some 1,000 kilometres of the mains that deliver water to homes around the city. Increasingly, some scientists and communities are questioning the wisdom in having drinking water flowing through pipes constructed from asbestos fibres.