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2,400-year-old fingerprint from mysterious sea raider found preserved on Scandinavia's oldest plank boatAn ancient fingerprint and several chemical clues from a 2,400-year-old sea raiders' boat are revealing secrets about where some mysterious attackers came from during the Iron Age.
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Why does pooping feel so good?Here's the science behind why going number two can bring a sense of relief.
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Why do avocados turn brown so quickly — and are they OK to eat at that point?Why do avocados turn brown in a flash? The answer is in the air.
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Why do dogs have cold noses?It's possible that a pup's cold, wet nose acts as an infrared sensor.
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How will sea levels change with climate change?Sea level changes are not happening uniformly across Earth's oceans. Here's why.
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How do fax machines work?The first fax machine used telegraph lines and was patented 33 years before Alexander Graham Bell's famous first phone call.
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How many organs are in the human body?There isn't an official "organ count" for the human body, but is there a ballpark estimate?
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What makes something fireproof?Fire safety involves "fire resistant" and "flame retardant" measures.
