We look at what happens to Canada's COVID-19 vaccine rollout after the country became the first in the world to approve Pfizer's shot for children aged 12 to 15. Alberta Premier Jason Kenney is facing backlash after saying he's run out of "tools to prevent a worst-case scenario in the health-care system." Plus, what it means that half of Canada is facing high mental health risks, and the hope emerging as more people open up about their pandemic challenges. Finally, what you need to know about the out-of-control rocket core on an unpredictable path towards Earth.