Leap into action with these intriguing Canadians

What do these three Canadians have in common? They're all in the middle of tackling life-changing moments.

Michelle Whitty is in the middle of astronaut training while also mothering a newborn. James Aisaican-Chase is vigorously fighting a traffic ticket despite doctors telling him he has terminal cancer and only weeks to live. Rebecca Deng is frantically raising money for brothers and sisters back home in South Sudan who are facing war and famine.

Meet Michelle, Jim and Rebecca, along with a few other Canadians who are catching our attention, this week on Now or Never.