Fish Don't Get Electrocuted Because Lightning Rarely Strikes Over The Ocean, For One Thing
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You're never supposed to use a hairdryer in the bathtub because the electric shock could kill you. So what happens to fish when lightning strikes? Why don't thunderstorms routinely kill off every animal in the sea?
Salt Won't Help Your Water Boil Faster
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As they say, "a watched pot never boils" (actually, that was Benjamin Franklin). If you want your water to boil faster, just add some salt. Right? Nice try, but no: the notion that salt boils your water faster is an old wives' tale. Not only does it not help, it hurts, since salt actually has the opposite effect on boiling water.
The Haenyo Are South Korean Mermaids
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Remember when you watched The Little Mermaid, then told your entire class that you wanted to be a mermaid when you grew up? No, just us? We digress. A group of elderly South Korean women are considered real-life mermaids, diving depths of up to 65 feet (20 meters) without any oxygen tanks. Beat that, Ariel.
The Jacuzzi Of Despair Is A Deadly Lake Within The Gulf Of Mexico
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A jacuzzi is the picture of warm, bubbling, soothing relaxation. It's a luxury. But tweak the scene to make those steamy bubbles full of methane and that hot, clear water a thick, briney stew and you have yourself the "jacuzzi of despair." This underwater brine pool in the Gulf of Mexico is no vacation spot—it's a toxic pocket of seawater that will certainly kill anything that swims into it. Hopefully we didn't just ruin jacuzzis for you...
The Radioactive Lake Karachay Is The World's Most Polluted Place
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A picturesque lake has been the inspiration of plenty of family vacations and weekend getaways. Just imagine it: nature, serenity, and peace. Oh, and radiation. Lots and lots of radiation. Enough radiation to kill you within a few hours of exposure. That's if you were ill-informed enough to plan a trip to Lake Karachay, anyway. This Russian lake is considered the most polluted place on the planet. And, no, it is definitely not a place you should have on your travel wish list.
Key Facts to Know
93% of all humans who have ever lived are dead today. 0:03
You wouldn't just burn if you fell into molten lava, you would turn into an explosive mini eruption. 3:04
Lake Karachay in Russia was named the most polluted spot on Earth. 6:07