Updated at 9:15 a.m. ET

SpaceX is scheduled to launch a new GPS satellite for the U.S. Air Force at 9:34 a.m. ET on Tuesday, in a mission that was delayed by unfavorable winds high in the Earth's atmosphere.

David Sedaris' "Santaland Diaries" has become a tradition on NPR. Listeners first met Crumpet the un-merry department store elf in 1992 when Sedaris' reading debuted on Morning Edition, and we've heard Crumpet's story many times since.

Now, we want to hear from you: Pretend you're an elf who works at Santaland during the holidays, and in just one sentence, tell us something about your imaginary shift.

One of candidate Donald Trump's pledges during the 2016 election campaign was to get tougher on Iran. He slammed the 2015 Iran nuclear deal as a lopsided giveaway to Tehran, and promised a return of American sanctions on Iran.

President Trump has been true to his word, making 2018 a difficult year for Iran.

Although other countries have stuck with the Joint Comprehensive Plan of Action signed with Iran, Trump pulled the United States out of the deal in May and announced that U.S. economic sanctions on Iran would return in two phases.

As a new Congress prepares to convene in a deeply polarized capital, many Americans are worried that divisiveness is becoming a national contagion.

On social media, as well as in real life, the will to listen to the other side appears to be lost. There's a lot of talk about civility — and incivility — and who gets to define what those words actually mean.

So we want to know: how is all of this playing out where you live?