What is cohousing and its origins

Rachel Collishaw is ready for a big change. She wants to leave her secluded rural home for something called cohousing. In an uncertain world, she and her husband are ready for a bit more connection. They would exchange their peaceful home for a much smaller condo, shared meals, commons spaces. But, right now, it's just a dream. One they aren't sure they can afford. Can Rachel and others like her find a better way of living with cohousing? Or is it a dream that just isn't ready to take root in Ontario?