Siblings Lily, 6, and Jack, 4, have been missing in rural Canada for four days

A desperate search for two children missing in a rural part of Canada’s Nova Scotia province has stretched into its fourth day, with dozens of rescuers combing the dense woods in search of the siblings.

​ A desperate search for two children missing in a rural part of Canada’s Nova Scotia province has stretched into its fourth day, with dozens of rescuers combing the dense woods in search of the siblings. Read More Breaking News, Latest News and Videos | CNN