Canada retaliates in trade war, Dolly Parton dies, new NFL brain injury research, and more

Dollar-for-dollar retaliation. Ottawa says it will match U.S. tariffs on Canada exactly. That means tariffs on $27 billion of U.S. goods. There’s also support for Canadian businesses as they brace for the impact of tariffs from both countries. And the insults and threats continue — including the U.S. president threatening to rename one of the Great Lakes, and to stop doing business with Ontario.

Plus: Legendary country singer, actor and philanthropist Dolly Parton has died.

Also: Every tackle takes a toll, and for some football players, the effects can last a lifetime. New research suggests at least one in four NFL players will develop chronic traumatic encephalopathy, and the true number is likely much higher.

And more.