Mystery
The Green Children of Woolpit
In 12th-century England, two green-skinned children appeared in Woolpit. They spoke an unknown language and refused all food except raw beans. Their origin was never explained.
Science
Honey Never Spoils
Archaeologists found 3,000-year-old honey in Egyptian tombs that was still edible. Honey's low moisture and acidic pH make it inhospitable to bacteria.
Science
Octopuses Have Three Hearts
An octopus has three hearts: two pump blood to the gills, while the third pumps it to the body. When swimming, the body-heart stops — which is why octopuses prefer crawling.
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