It is illegal to climb Gangkhar Puensum in Bhutan, so no-one has ever reached the top. It is the highest unclimbed mountain in the world.
According to Las Cabañuelas lore, you can predict the weather for the whole year based on the weather of each day in January.
What do the bicycle, Marmite, Mormonism, and Frankenstein have in common? A volcano in Indonesia.
On 17 February 1832 – at the bidding of Neptune, god of the sea – Charles Darwin was blindfolded, his face covered in paint and pitch, and he was dunked into a water bath. He had crossed the line for the first time.
In 1943 a new volcano arose in Hokkaido. The Japanese government managed to keep it a secret for several years.
In a few places around the world sand dunes make a sound like a sad tuba when you walk on them.
It’s theoretically possible to swim across North America from the Pacific to the Atlantic, thanks to a strange creek in north-west Wyoming.
Radiocarbon dating only works on organic material, so how do you accurately measure the last time rocks and sediment saw sunlight? Luminescence dating.
Every six months the Tonlé Sap River reverses direction.
Enrico Fermi switched on the first human-made nuclear reactor in 1942, but the first natural nuclear reactor on Earth occurred 1.7 billion years earlier.
The oldest Earth rock was not found on the Earth.
Leonardo da Vinci and Niccolò Machiavelli once teamed up to steal the Arno river.
Aircraft can punch cloud holes that are much larger than the plane itself.
In 1929 Bavarian architect Herman Sörgel proposed building a dam across the Strait of Gibraltar and shrinking the Mediterranean.
423,000 people live in Flevoland, a province of the Netherlands. Before 1957, the entire area did not exist.
The rise of the Andes reversed the direction of the Amazon River’s flow from the Pacific to the Atlantic.