Alberta pipeline reaction, heatwave melts U.S. 250, StubHub ghost tickets, and more

<p>Ottawa throws its weight behind a massive expansion of Canada's energy sector. The new multi-billion dollar west coast pipeline is designed to unlock new global markets and calm Western alienation. It also puts taxpayers on the hook for a massive financial risk in an uncertain global economy.</p><p><br></p><p>Also: Tomorrow, the U.S. marks a massive milestone — its 250th birthday. But a blistering heatwave is crashing the party, cancelling parades and emptying streets from Philadelphia to Washington.</p><p><br></p><p>And: Buying tickets to nowhere. A CBC news investigation into how scalpers are able to advertise on StubHub without even having the tickets themselves.</p><p><br></p><p>Plus: U.S. Ambassador Pete Hoekstra warns CUSMA trade talks are far from the finish line, a major new mRNA vaccine safety study, Venezuela's medical crisis, and more.</p>