If everything goes to plan, Alex Bellini could become the first person to live on an iceberg, where temperatures hover between 5 to −4 degrees Fahrenheit and gale-force winds blow. The 38-year-old Italian public speaker and adventurer, who crossed two oceans alone on a row boat and ran across the U.S. in 70 days, recently spoke about his project, Adrift, a years’-long ambition to live in a survival capsule on a Greenland iceberg. Once a suitable iceberg is selected, Bellini plans to conduct research on climate change‘s affect on ice sheets and to test the limits of human endurance and...