In 1945 an Air Force bomber crashed into the side of the Empire State Building. An elevator cab carrying Betty Lou Oliver fell 75 floors straight down; she, incredibly, survived.
If you’re a bovine veterinarian, one of the tools in your arsenal might be the cow magnet.
The Tsar Bell in Moscow is the largest extant bell in the world – but it has never been rung.
The new terminal building of Ottowa’s international airport was supposed to open in 1959. After one pass by a US air force jet the day before the opening ceremony, it could not open until 1960.
A bit of the Apollo 12 rocket from 1969 is still floating around out in space. It orbits the sun – but every thirty or forty years it comes back to orbit the Earth for a while.
Imagine an elevator with no doors that never stops: this is the paternoster lift.
At Barra Airport, in Scotland’s Outer Hebrides, you cannot land at high tide.
In the mid-20th century, several countries had plans to construct a flying submarine.
Germany’s 1930 Schienenzeppelin was a propeller-driven train that could pull forty passengers at speeds faster than 200 kilometres per hour.
In a kiln, a set of three drooping cones can monitor the effects of temperature on the pottery items being fired.
The famed philosopher Ludwig Wittgenstein was also an early pioneer of jet-engine propellers.
The Sweet Track in Somerset, Britain, was built exactly 5,828 years ago.
What do the bicycle, Marmite, Mormonism, and Frankenstein have in common? A volcano in Indonesia.
In 1978 the structural engineer of the Citigroup Center skyscraper learned of a fatal flaw in the design that could cause the tower to topple in high winds. Over the next three months a team raced to secretly repair it at night.
In 1950 Leo Szilard warned the world that a single device capable of annihilating all life on Earth was theoretically possible.
The inventor of the diesel engine died at sea under mysterious and still unexplained circumstances.