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Millions of people cross international borders every day.

This process is often easy, even mundane, but for some, it can be a matter of life and death.

In this week's special show, we bring you three pieces on migration and research.

We meet Kasim al-Said Mahmoud, a Syrian scientist who risked his life leaving his country.

We also ask whether the world's current systems are ready to deal with migration caused by climate change.

Plus we take a look at smart borders and the potential dangers of letting a computer decide who's allowed into a country.

This is a nature podcast for March the 2nd, 2017.

I'm Noah Baker.

And I'm Adam Levy.

Out of 4.8 million Syrian refugees currently estimated to be living outside their home country,

as many as 2,000 are academics.

One of them is Kasemar Sa'aad Mahmoud. Kassam and his family fled Syria in 2012

and went to Turkey. From there, he applied for an academic position in Europe through a

program called Scholars at Risk, which helps academics who are threatened or attacked. A year and a

...