Historical
Environmental
Economic and Social
Future and Potential
Disasters
100

This ancient civilization built aqueducts to transport water over long distances, revolutionizing urban plumbing systems.

What is Rome?

100

What is the term for the gradual increase in Earth’s average temperature, primarily caused by greenhouse gas emissions from human activities?

What is global warming?

100

Opened in 1914, this man-made waterway drastically shortened shipping routes between the Atlantic and Pacific Oceans, boosting global trade and economic growth.

What is the Panama Canal?

100

NASA’s Artemis program plans to send astronauts to this celestial body again for the first time since 1972.

What is the Moon?

100

In 1986, a reactor explosion at this nuclear power plant in Ukraine released massive radiation, leading to widespread contamination and global changes in nuclear safety standards.

What is Chernobyl?

200

Often called one of humanity’s greatest inventions, this simple circular device revolutionized transportation and machinery when first used around 3500 BCE.

What is the wheel?

200

This energy source produces minimal greenhouse gas emissions compared to fossil fuels, but raises concerns about radioactive waste and potential accidents.

What is nuclear power?

200

Opened in 1994, this underwater rail link connects the United Kingdom and France, boosting trade and travel across the English Channel.

What is the Channel Tunnel?

200

This emerging automotive technology uses sensors, cameras, and AI to navigate roads without human input, promising to reduce accidents and transform transportation.

What are self-driving cars?

200

In 1986, this space shuttle exploded shortly after launch due to an O-ring failure in its booster.

What is the Challenger disaster?

300

This 15th-century invention made mass communication possible, paving the way for modern newspapers, books, and even the internet.

What is the Gutenberg Printing Press?

300

Completed in 1936, this massive concrete structure provided hydroelectric power and water storage for the American Southwest—but also disrupted river ecosystems and fish habitats along the Colorado River.

What is the Hoover Dam?

300

This emerging technology has single-handedly increased professors’ coffee consumption by requiring every assignment to be redesigned from scratch.

What is AI?

300

Part of Saudi Arabia’s NEOM project, this planned 110-mile-long linear city aims to house 9 million people in a zero-carbon environment, featuring underground high-speed transit and sustainable design.

What is The Line?

300

This flood protection system failed during Hurricane Katrina in 2005, leading to catastrophic flooding and widespread devastation in New Orleans.

What is the New Orleans levee system?

400

This early 20th-century chemical process revolutionized agriculture by enabling large-scale fertilizer production, fueling global population growth and economic expansion—while also supplying nitrates for explosives, making it a cornerstone of modern warfare.

What is the Haber-Bosch Process?

400

In 2010, this environmental catastrophe released millions of barrels of oil into the Gulf of Mexico, causing severe damage to marine ecosystems and coastal economies.

What is the BP oil spill?

400

Completed in 1869, this massive transportation project connected the eastern and western United States, revolutionizing trade, travel, and economic growth.

What is the Transcontinental Railroad?

400

This hypothetical megastructure would completely surround a star to capture its energy output, providing near-limitless power for an advanced civilization.

What is a Dyson Sphere?

400

Nicknamed “Galloping Gertie,” this suspension bridge dramatically collapsed in 1940 due to aeroelastic flutter, becoming a classic case study in engineering failure.

What is the Tacoma Narrows Bridge?

500

Designed by Joseph Bazalgette after the infamous “Great Stink” of 1858, this Victorian engineering marvel used massive interceptor sewers and pumping stations to revolutionize urban sanitation and virtually eliminate cholera outbreaks in its city of origin.

What is the London Sewer System?

500

This chemical, once widely used in refrigeration and air conditioning, was later banned under the Montreal Protocol because it depleted the ozone layer.

What is Freon (or chlorofluorocarbons used in refrigeration)?

500

Invented in the 1830s and 1840s, this communication revolutionized long-distance messaging, enabling rapid information exchange across telegraph lines and transforming global commerce and society.

What is Morse code?

500

This emerging technology uses principles of superposition and entanglement to perform calculations far beyond the capabilities of classical computers, promising breakthroughs in cryptography and materials science.

What is quantum computing?

500

In 2019, a petrochemical plant in Texas exploded after a butadiene leak, causing widespread damage, evacuations, and renewed debate over aging chemical infrastructure.

What is the Port Neches Explosion?