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21 October 2026

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Illustration of a large asteroid colliding with Earth on the Yucatan Peninsula in Mexico. This impact is believed to have led to the death of the dinosaurs some 65 million years ago. The impact formed the Chicxulub crater, which is around 200 kilometres wide. The impact would have thrown trillions of tons of dust into the atmosphere, cooling the Earth's climate significantly, which may have been responsible for the mass extinction. A layer of iridium-rich rock, known as the K-pg boundary, is thought to be the remnants of the impact debris.

Earth

Earth entered its ‘bad decades’ after dinosaur-ending asteroid strike

Coral reef near French Polynesia

Environment

All tropical coral reefs could collapse within 50 years

Mind

Adults may be more creative than children 鈥� but less confident about it

Technology

Global race to update computers as AI discovers most disruptive hack yet

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