James Haines-Young talks to <em>The National</em>'s Sunniva Rose and Lina Mokadden, a resident of Beirut, who describe what the <a href="https://www.youtube.com/watch?v=qVRn257OQP4">massive explosion</a> in the Lebanese capital felt like and its 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, explains why Beirut lost not just lives but also its heritage.