Canada's Defense Sovereignty and Environmental Challenges

<p>U.S. Court of International Trade rules many of Donald Trump's tariffs illegal.&nbsp;</p><p>Janyce McGregor explains what that US tariff ruling could mean for Canada.&nbsp;</p><p>Elon Musk leaves Trump administration after leading effort to slash U.S. government.&nbsp;</p><p>Manitoba declares province-wide state of emergency over wildfires.&nbsp;</p><p>Alberta battles wildfires amid extreme heat warning.&nbsp;</p><p>Fire in central Labrador burning one kilometre away from Churchill Falls.&nbsp;</p><p>Historical documents show health officials knew gold mines in N.W.T. were contaminating the city of Yellowknife in the 1940s and '50s.</p><p>Chinese paraglider ordered to stay grounded after updraft takes him 8,000 metres into the sky.</p>