Alphabet's Toronto smart city proposal faces timber innovation challenge

TORONTO (Reuters) - An Alphabet company's vision for a "smart city" project in Toronto includes buildings made of timber that are five times the current limit, potentially steering the company into the challenges of timber innovation in Canada.Sidewalk Labs' proposal includes developing 30-plus story buildings made of timber, close to Toronto's central business district, as part of their commitment to sustainability.Sustainability is a "key factor" in evaluating the proposal, said Andrew..