Tornadoes are among the most powerful and destructive natural hazards in the world, with the U.S. experiencing the most globally. Experts explain their formation, while residents of Joplin, Missouri (tornado in 2011) and Mayfield, Kentucky (tornado in 2021) share harrowing survival stories.

Wildfires are becoming megafires, devastating populated areas and causing tragic loss of life, as seen with the Yarnell Hill Fire and the Maui Fire in Lahaina, Hawaii; experts investigate the science and causes behind this phenomenon.

Two of the deadliest tsunamis ever recorded are the 2004 Indian Ocean Tsunami and the 2011 Tohoku Tsunami in Japan. Survivors recount traumatic experiences as scientists shed light on the causes and warning signs of tsunamis.

Volcanoes erupt globally every day, with immense destructive potential. Detailed footage and survival tales provide insight into their monstrous power, from Mount St. Helens in 1980 to the 2018 eruption of Volcán de Fuego.

With hurricane season extending from June to November, millions of people are gripped by anticipation and fear each year. This episode looks into the minds of the nation's top experts as they investigate the formation, increasing frequency and intensifying power of these killer storms. They also examine the cutting-edge science that helps people survive and mitigate the impact of hurricanes.