NPR News

Voters in Ireland are deciding today whether the country will amend its constitution to make same-sex marriage legal.

The vote follows months of debate in the heavily Catholic country. Opinion polls suggest the referendum will pass and Ireland become the first country in the world to legalize same-sex marriage in a national vote.

But, as NPR's Ari Shapiro points out, "polls in this part of the world have been totally wrong in the past.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Former Korean Air executive Cho Hyun-ah, or Heather Cho, is out of jail after a four-month stay. If her name and alias don't ring a bell for you, the reason why she was in jail might.

Heroin, today, is killing more and more people in rural America.

One Mexican cartel has seeded low-cost heroin around rural towns in the Southwest and Midwest, selling it cheap and easy, almost like pizza.

Madison, Neb. — population 2,500 — is just a speck of a town, a two-hour drive from the big-city bustle of Omaha. But it's not far enough away to avoid the growing impact of heroin.

"The world's gotten smaller," says Police Chief Rod Waterbury. "If drugs can make it to Chicago, they can make it here."

What's at the bottom of the bottom of the food chain? Well, think small ... smaller than you can see.

Microbes in the ocean!

There are (and scientists have done the math) trillions of microorganisms in the ocean: plankton, bacteria, krill (they're maybe bigger than "micro," but not by much), viruses, protists and archaea (they're like bacteria, but they aren't bacteria).

Updated at 10 a.m. ET

The shootout involving motorcycle gangs last weekend in Waco, Texas, resulted in 170 arrests and put a spotlight on the gangs' history, which dates back to the 1940s.

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