Hot stuff: Lab hits milestone on long road to fusion power

This image provided by the National Ignition Facility at the Lawrence Livermore National Laboratory shows the NIF Target Bay in Livermore, Calif. The system uses 192 laser beams converging at the center of this giant sphere to make a tiny hydrogen fuel pellet implode. (Damien Jemison / Lawrence Livermore National Laboratory via AP) 
This image provided by the National Ignition Facility at the Lawrence Livermore National Laboratory shows the NIF Target Bay in Livermore, Calif. The system uses 192 laser beams converging at the center of this giant sphere to make a tiny hydrogen fuel pellet implode. (Damien Jemison / Lawrence Livermore National Laboratory via AP)

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Trudeau cancelled B.C. appearance after RCMP warned protest could escalate: CP source

Prime Minister Justin Trudeau cancelled plans to appear in person at a Liberal fundraiser in British Columbia Tuesday after RCMP warned an aggressive protest outside the event could escalate if he arrived, said a source close to the decision. The source spoke to The Canadian Press on condition of anonymity because they were not authorized to discuss the situation publicly.

Here's how to watch tonight's French Conservative leadership debate

Later tonight, the six candidates on the ballot to be the next leader of the Conservative Party of Canada will be debating each other in Laval, Que. CTV News will be live-streaming the debate with English translation and offering real-time updates and analysis, and you can follow along.

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