Bamboo (the world's tallest grass) can grow up to 90cm in a day.

The Great Wall of China is the only man-made structure visible from space.

Odds of being killed by lightning? 1 in 2million/killed in a car crash? 1 in 5,000/killed by falling out of bed? 1 in 2million/killed in a plane crash? 1 in 25 million.

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