TODAY IN HISTORY

Today is Tuesday, Aug. 1, the 213th day of 2017. There are 152 days left in the year. Today’s Highlight in History:

On August 1, 1957, the United States and Canada announced they had agreed to create the North American Air Defense Command. On this date:

n In 1907, the U.S. Army Signal Corps established an aeronautical division, the forerunner of the U.S. Air Force.

n In 1913, the Joyce Kilmer poem “Trees” was first published in “Poetry: A Magazine of Verse.”

n In 1936, the Olympics opened in Berlin with a ceremony presided over by Adolf Hitler.

n In 1944, an uprising broke out in Warsaw, Poland, against Nazi occupation; the revolt lasted two months before collapsing.

n In 1981, the rock music video channel MTV made its debut.

Ten years ago: The eight-lane Interstate 35W bridge, a major Minneapolis artery, collapsed into the Mississippi River during evening rush hour, killing 13 people.

Five years ago: President Barack Obama made his rival’s personal millions an issue in the race for the White House, telling an Ohio audience that Mitt Romney “is asking you to pay more so that people like him can get a big tax cut.”

One year ago:. Vice President Joe Biden officiated a gay wedding over the union of Joe Mahshie and Brian Mosteller, both longtime White House aides, at the U.S. Naval Observatory in Washington.

Today’s Birthdays: Blues singer Robert Cray is 64. Movie director Sam Mendes is 52. Country singer George Ducas is 51. Actress Tempestt Bledsoe is 44.

Thought for Today: “Pride, like humility, is destroyed by one’s insistence that he possesses it.”— Kenneth Clark, American educator and psychologist (1914-2005).

—The Associated Press