Police in Canada are searching for two suspects described as “armed and dangerous” after a deadly mass stabbing. Tens of millions of Americans are under heat alert - we’ll tell you why people in California are being told to save power. Labor Day means one thing for politicians: the midterms are coming. Rescue efforts are ongoing in Washington state after a plane carrying 10 people crashed over the weekend. Plus, a Black Lives Matter executive has been accused of stealing millions.

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