1. Tornado

Daring storm chasers risk their lives to study, document and provide inside looks at the raw power and devastation of tornadoes across the U.S.

2. Volcano

From Iceland to Italy, experts take an in-depth look at four imposing volcanoes, each bigger, deadlier and more explosive than the last.

4. Hurricane

A closer look at the ravaging effects of Hurricane Ida in 2021 reveals how rising global temperatures are pushing storms to grow more powerful than ever.