In China, there’s a bridge over the Yangtze River that’s 164 km long—the longest bridge in the world! It carries both trains and cars. Building it was more complex than some space missions.Jul 10, 2025

The Milky Way galaxy contains 100-400 billion stars, as determined by astronomical surveys.

The Quilon River in India appears only once every 10 years and flows for a few days! Geologists discovered its water drains into underground cavities due to tectonic movements.

Strange voices are heard from the Puccio Well in Tuscany, Italy! Acoustics experts found it’s the echo of wind amplified by deep stone walls.

A cave in New Mexico echoes with 1,000-year-old voices from ancient rock art. These paintings, made by Pueblo people, seem to whisper in the silence.

Sea lions have developed the ability to dive to depths of 300 meters, confirmed by physiological tests.

Mount Etna erupts about 0.1 cubic kilometers of lava per century, measured by geologists.

Climate models indicate that sea levels could rise by 1 meter by 2100 due to glacier melting.

The Tambora volcano in 1815 ejected 150 cubic kilometers of ash, causing the ‘year without a summer’ in Europe.

Lake Hillier in Australia turns pink once a year! Biologists determined it’s due to Dunaliella salina algae releasing pigment in the salty water.

Lake Uyuni in Bolivia reflects everything like a mirror! It’s due to a thin layer of water on its salty surface, creating perfect reflections of the sky and mountains.

A rare ‘golden penguin’ in Antarctica has yellow feathers due to a mutation. It’s been seen only a few times.

European eels can migrate 6,000 km to the Sargasso Sea for breeding, proven by tagging studies.

In Indonesia, a ‘fire bridge’ on the Brantas River glows at night. Locals decorate it with lanterns during festivals.

The oldest tree in the world, Methuselah, a bristlecone pine in the US, is 4,850 years old. It outlived the fall of the Roman Empire and still grows! Its exact location is kept secret to protect it...

Archaeological finds in Egypt revealed the use of copper for tools 5,000 years ago.

The largest diamond ever, the Cullinan, was found in 1905 in South Africa. It weighed 3,106 carats and was the size of a fist! The diamond was cut into 9 pieces, two of which now adorn the British ...

Ancient skulls in Israel, dated to 90,000 years ago, belong to Neanderthals, per DNA analysis.

Ice labyrinths on the Vatnajökull glacier in Greenland change shape yearly! Glaciologists explain this as melting and ice movement due to temperature changes.

The world’s oldest working lighthouse is in Spain—the Tower of Hercules. Built during the Roman Empire about 1,900 years ago, it still guides ships today. Its stone walls have withstood centuri...