Sharks have been on the planet longer than trees.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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The elephant brain weighs about 6,000g.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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Dogs sometimes fake being sick to get attention.
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