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Immigrants fleeing gang violence in Central America are again surging across the U.S.-Mexico border, approaching the numbers that created an immigration crisis in the summer of 2014. While the flow of immigrants slowed for much of last year, nothing the U.S. government does seems to deter the current wave of travelers.

The Jews who immigrated to America in the early 20th century brought with them their history as a persecuted people. Many were fleeing pogroms and anti-Semitic attacks in Europe, and those experiences bonded them to other groups that also faced discrimination.

More than 2 million Syrians have fled to Turkey, driven out by the fighting that erupted in their homeland in 2011. But none can claim an odyssey quite like that of Mohammed Faris.

As Syria's first and only cosmonaut, Mohammed Faris rocketed into orbit with two Soviet colleagues in 1987. He conducted experiments and photographed his country from space. By the time he returned to Syria, most everyone in the country knew his name.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Will this summer be hotter than average?

How much rain can we expect?

A key step to answering questions about the weather is to consult the historic record. But what if there were no record? That's the predicament that Rwanda faces. The civil war and genocide that devastated that country in 1994 also destroyed Rwanda's system for tracking weather. The result was that for a roughly 15-year stretch, Rwanda has almost no record of what its weather was like.

Flowers generate weak electric fields, and a new study shows that bumblebees can actually sense those electric fields using the tiny hairs on their fuzzy little bodies.

"The bumblebees can feel that hair bend and use that feeling to tell the difference between flowers," says Gregory Sutton, a Royal Society University Research Fellow at the University of Bristol in the United Kingdom.

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