There's a regenerative candle that creates a new candle as it melts.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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An African Baobab tree in South Africa, known as Big Baobab, has a circumference of 154 feet and even has a bar inside the trunk that can fit 60 people.
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
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