Here's five headlines you should know Tuesday.

SHARE 1 COMMENTMORE

Government shutdown? Not exactly

If Congress doesn't pass a new spending bill in the next week, the federal government will shut down on Oct. 1. That is, 41% of it will. An estimated 59% of non-defense federal employees would be exempt from the shutdown and would go to work as usual, according to a USA TODAY analysis of shutdown contingency plans filed with the Office of Management and Budget.

Schools tighten security after Sandy Hook

In a grim reminder that mass shootings have become a fact of life in America, school districts across the USA this fall are opting for more locked doors, more visitor check-ins and more surveillance equipment.

It's National Punctuation Day!

It's a day to celebrate the lowly comma and the proper use of periods. The National Punctuation Day website suggests several ways to celebrate, including reading a newspaper and circling all of the punctuation errors you find.

Two charged in Chicago park shooting that wounded 13

Two men have been charged in connection with a shooting last week at a Chicago park that injured 13 people, including a 3-year-old boy, Chicago officials announced.

Somalis in U.S. condemn Kenyan mall attack

Somalis in U.S. are condemning the deadly attacks on the Kenyan shopping mall tied to the extremist al-Shabab Islamic group based in their homeland. Yet they and others also fear the latest battlefront on terrorism could radicalize more of their own here.

Iran set for United Nations charm offensive

Bonus: Iranian President Hasan Rouhani will address the United Nations for the first time later Tuesday on a day when President Obama is also due to speak.

SHARE 1 COMMENTMORE