PBS | 9:00 pm

As nations around the world try to elevate their prestige with new skyscrapers that rise higher and higher each year, some experts worry that these soaring buildings may be flirting with disaster, despite advances in engineering and architectural practices. The new episode "High-Risk High-Rise" explores the question of how securely these structures would hold up against earthquakes, fires and other potential calamities, as well as what we have — or haven't — learned from past disasters.