Davar Ardalan

We know that women and minorities continue to be underrepresented in the STEM fields — that's science, technology, engineering and math. Now dip into #RaceOnTech to find out why. Since Monday, entrepreneurs, scientists, computer scientists and coders from Silicon Valley to Greenbelt, Md., have been sharing their thoughts one tweet at a time.

Boys like Facebook, girls like Instagram. Wealthier kids Snapchat. Lower income kids Facebook. And somehow Google+ is still relevant.

So says the Pew Research Center's latest study, "Teens, Social Media & Technology Overview 2015," in which we officially learn that teenagers spend as much time online as adults think they do:

• 92 percent of teens report going online daily.
• 24 percent say they go online "almost constantly."

Cuban cigars are wrapped in mystique. Soon travelers will be able to bring back $100 worth of the famed cigars. Here are some facts you should know.

1. Cuban cigars are expensive, even in Cuba.

As NPR's Tom Gjelten tweeted, the new permission to bring back $100 worth of tobacco (or alcohol) allows you at the most four good cigars. Tom says he hasn't been back to Cuba for six years, but the last time he was there, a single Cohiba or Uppman "set you back at least $25."

NPR senior producer Davar Ardalan spoke with Simin Behbahani in June 2009 and has this remembrance:

One of Iran's most vocal and outspoken poets died this morning in Tehran at the age of 87. Known as the "Lioness of Iran," Simin Behbahani reportedly had been in a coma for more than two weeks.

Code Switch has been writing about some overlooked cultural interactions that have helped shape what Jewish identity is today, and we continue the series with a post by Tell Me More Senior Producer Davar Ardalan on Iranian Jews.

Judaism has a rich and millennial history in Iran including the era 2,500 years ago when the first Persian ruler declared religious freedom. But during the Islamic Revolution, as the last Persian monarch left Iran — 35 years ago this month — thousands fled to the United States in search of a new home.