Editor's note

A video emerged this week of the Greek coastguard shooting into the sea around a migrant boat. It put the life or death decisions of those on the move in the Aegean into sharp relief.

After Turkey removed its border restrictions with Greece on February 29, thousands of people began to make their way across the country to the Greek border. But Greece blocked their entry, and many are now stuck in no-man’s land in freezing conditions.

The crisis comes at a time of heightened tensions on the Greek islands, amid anger at plans to create closed camps for asylum seekers there. Ilay Romain Ors, who is in Greece researching the history of overlapping waves of migration in the Aegean, explains what’s been going on. She writes how the living memory of previous experiences of displacement forms a vivid background to the current arrival of refugees.

Meanwhile, after the UK experienced its wettest February on record, we look at the medieval roots of modern weather forecasts. And two new tools helps show how the slave trade enriched merchants in towns and cities such as Liverpool.

And read analysis of how the race for the Democratic presidential nomination is being driven by Latino voters, moderates and Trump supporters.

Gemma Ware

Global Affairs Editor and Podcast Producer

Top stories

Greek police clash with migrants at the border with Turkey in Kastanies. Dimitris Tosidis/EPA

Tensions mount at Greek border with Turkey amid contested history of migration in the Aegean

Ilay Romain Ors, University of Oxford

The Aegean has long been a place of overlapping migration. Now it is facing a new crisis.

Reporting dreary weather for many centuries. Shutterstock/ahupepo

The medieval roots of modern weather forecasts

Anne Lawrence-Mathers, University of Reading

How science has been used to predict wind and rain for over 1,000 years.

Digital reconstruction of French slaver L'Aurore. www.slavevoyages.org/

Slavery: new digital tools show how important slave trade was to Liverpool’s development

Nicholas Radburn, Lancaster University; David Eltis, Emory University

If you want to know the extent of the slave trade from Liverpool, use the tools in this article.

Voting machine operator David Schaefer, right, helps voter Kaitron Gordon with her ballot on Tennessee’s Super Tuesday primary in Nashville after deadly overnight tornadoes delayed the start of voting. AP/Mark Humphrey

Super Tuesday results show how Latino voters, moderate Democrats and Trump supporters are shaping the election

Katie A. Cahill, University of Tennessee; Andrea Kent, West Virginia University; Rey Junco, Tufts University

As the race for the Democratic nomination narrows to Joe Biden and Bernie Sanders, what does it all mean for November? We asked three scholars to closely analyze the Super Tuesday results.

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