Likely cause of Swiss fire; Calgary's water main fix timeline; Trump's health

Investigators believe they've pinpointed the likely cause of the deadly New Year's fire at a Swiss ski resort bar. Redmond Shannon reports on the findings, and the heartbreaking pleas from families to find missing loved ones. As economic protests rage in Iran, Eric Sorensen reports on U.S. President Donald Trump's warning to Iran if it kills peaceful demonstrators. Meanwhile, scrutiny is growing about Trump's health. Jackson Proskow looks at how the commander-in-chief is firing back while defiantly disobeying doctors' orders. Back here in Canada, people are surveying the damage after Pimicikamak Cree Nation in Manitoba went days without electricity in the extreme cold. Neetu Garcha looks at what has to happen before residents can return home. Heather Yourex-West reports on when Calgary's major water main break could be fixed, and the frustration in the city over its aging infrastructure. Also, working out of the office - is out. Megan King looks at how Ontario's public servants aren't allowed to work from home anymore. And Katherine Ward introduces you to two Canadian scientists aiming to change how lung imaging is done to speed up diagnostics and improve patient safety. Learn more about your ad choices. Visit megaphone.fm/adchoices