James Haines Young pieces together the explosion and the immediate aftermath. He talks to The National’s Sunniva Rose and Lina Mokadden, a resident in Lebanon, who explain what the explosion felt like and the aftermath. We also hear from Najat Aoun Saliba, Professor of Analytical Chemistry at the American University of Beirut, and Professor Andrew Tyas, an academic at the University of Sheffield specialising in blast and impact engineering, about the effects of the explosion. Mona Harb, a Professor of Urban Studies, tells us why Beirut didn't just lose lives, but also it's heritage. To watch the explosion, click here.