Mumbai was built by joining seven islands, ran India's first train in 1853 and is home to Asia's oldest stock exchange. 12 incredible facts about the City of Dreams.

Everest's summit was once the sea floor, its height was first calculated by an Indian mathematician, and it is still growing. 10 incredible facts about the world's highest peak.

Light could circle Earth 7.5 times in a second, slows down in water and carries the internet. Plus C.V. Raman's Nobel-winning discovery. 10 brilliant facts.

The Sun holds 99.8% of the solar system's mass, its light takes over 8 minutes to reach us, and it is actually white. 10 amazing facts about our star.

Octopuses have three hearts, blue blood and most of their neurons in their arms. Meet the ocean's most intelligent shape-shifter with 10 incredible facts.

86 billion neurons, no pain sensors and a hunger for 20% of your energy: discover 10 incredible, science-backed facts about the human brain.