The fight over Shiyes — a remote railway outpost in Russia’s Arkhangelsk Province that is to play host to a giant landfill — first erupted a little over a year ago after local hunters came across a secret construction site deep in the region’s forests.

Omer Azizi spent much of the past year developing an app that he calls Safar, meaning “journey” in both Farsi and Arabic, to solve the information gap that exists for refugees worldwide. It came out of an assignment in a unique class he took last year from the engineering school at USC.

Science historian Gabriela Soto Laveaga speaks to The World about the intersection between disease and immigration.