Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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