Tokyo Skytree, at 634 meters, uses a central pillar with a five-story dampener to resist earthquakes.

The development of laparoscopic surgery reduced recovery time.

YouTube was originally designed as a video dating site.

The first webcam was invented to check if a coffee pot in a Cambridge lab was full without walking downstairs.

Electric cars predate gasoline-powered cars — electric vehicles were common in the early 1900s before oil became dominant.

The first mechanical computer, the Difference Engine, was designed by Charles Babbage in 1822 but never fully built.

The Burj Khalifa is the tallest building in the world.

The first computer bug was a literal bug — Grace Hopper's team found a moth trapped in a Harvard Mark II relay in 1947.

Maglev trains use superconducting magnets to levitate above the track, eliminating friction and enabling 600+ km/h speeds.