Migration is as old as humanity itself. In today’s world, it ebbs and flows as nations change their border policies with the times. Paul Salopek is a National Geographic Explorer who has been retracing the global path of the earliest humans on foot for the past 13 years. In that time, he has witnessed significant migration in real time. He joins Host Marco Werman to share his observations on how migration’s role in the global zeitgeist has changed.

Guy De Launey, from our partners at DW, Deutsche Welle’s, program Inside Europe, reports on Serbia’s vast lithium reserves and the challenges facing companies trying to access them.

Colombia is vying for a place in the global race to produce renewable energy. One desert region on its Caribbean coast is crucial for those energy goals: La Guajira. And efforts are ramping up quickly to expand the region’s green energy potential, with plans to drastically increase the number of wind farms planted on the desert soil over the next decade.

At just 22 years old, Naabil Khan is the founder of Skin For All, a website making information on skin conditions across diverse skin tones more accessible. She recounts the website’s story for our partners at Deutsche Welle, DW, on their program Inside Europe.

New York’s Fort Ticonderoga is celebrated for the artillery it contributed to the American Revolution. Less known, though, are the stories behind more than 100 cannons resting on its walls today.