In the early morning today, a 7.8-magnitude earthquake struck near the Turkish city of Gaziantep, collapsing thousands of buildings across southern Turkey and northwestern Syria. The quake was followed by numerous powerful aftershocks, and—nine hours later—a separate 7.5-magnitude earthquake nearby. Initial reports say that more than 2,100 people were killed in the region, and authorities say they expect that number to rise over the next few days.