The largest library in the world, the Library of Congress in the US, holds over 170 million books. If you read one book a day, it’d take 465,000 years to read them all! They even have books the s...

In the 1920s, the US sold radioactive water as medicine. Called “Radithor Radioactive Water,” it was promised to cure all diseases. Later, it was found to cause cancer and was banned.

Japan invented a maglev train that reaches 603 km/h—the fastest train in the world! It floats above the tracks using magnets. Passengers say riding it feels like flying at low altitude.

An underground city, Derinkuyu, with rooms and streets, was found in Cappadocia, Turkey! Archaeologists determined it was built in the 8th century BCE for protection from enemies.

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

In 2019, scientists discovered a new species of shark in the ocean that glows in the dark. Called the “pocket shark,” it’s only 14 cm long and uses light to hunt. This discovery shows the oce...

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.

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

The Hubble Space Telescope detected galaxies 13 billion light-years from Earth.

The Voyager spacecraft carries a golden record with Earth’s voices! It was launched in 1977 to tell other civilizations about humanity.

Along the cliffs of Ireland, the Skellig Michael island, a 6th-century monastic site, perches 230 meters high. Monks lived in stone beehive huts. Star Wars filmed there in 2015.

Mauna Loa volcano in Hawaii releases sulfur gases affecting global climate, measured by NASA.

Archaeological digs in Iraq revealed clay tablets with cuneiform writing from 5,000 years ago.

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

In the 1950s, the US ran an experiment teaching dolphins to speak. A dolphin named Margaret lived with a scientist in a flooded house to communicate 24/7. She even tried mimicking human speech, but...

In Australia, a ‘ghost tree’ with white bark glows in the dark. It’s found only in Queensland’s tropical rainforests.

In 1888, the oldest photograph of a human was found in London. The image shows a busy street, but due to long exposure, only one person who stood still is visible. It’s like a window to the past!...

In 1900, the Antikythera Mechanism, a 2,000-year-old ancient computer, was found in Greece. It predicted the movement of stars and planets with incredible accuracy. Scientists are still amazed at h...

Have you heard the sand in the Namib Desert make music-like sounds when walked on? Researchers found this is caused by the vibration of sand grains creating an acoustic effect.

Quantum mechanics predicts that electrons exist in probabilistic clouds around an atomic nucleus.