Aug 30

August 31 Digest

Sep 01

Your Mouth Contains A World Of Bacteria

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Your Mouth Contains A World Of Bacteria

Sugar alone won't eat away at the enamel of your teeth and cause cavities. The 600-plus types of bacteria living in your mouth won't do it alone either. The combination of sugar, saliva, and the acid that bacteria in your mouth secrete will dissolve your teeth.

01:11

from Coma Niddy

Key Facts to Know

  • 1

    Your mouth is home to billions of bacteria. 0:14

  • 2

    After eating, bacteria secrete the stuff they don't need, which is the acid that creates cavities. 0:25

  • 3

    The acid from bacteria in your mouth mixes with saliva and sugar to dissolve enamel. 0:35

Language Facts You May Not Have Known

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Language Facts You May Not Have Known

Of all the languages on Earth, 840 of them are spoken in a single country—Papua New Guinea. Total, there are roughly 7,000 languages spoken on Earth, but about 2,400 of them are in danger of going extinct. In fact, it is estimated that every 14 seconds a new language goes extinct.

03:17

from list25

Key Facts to Know

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    South Africa has more official languages than any other country at 11. 0:35

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    Frisian is supposedly the easiest foreign language for English speakers to learn. 1:50

  • 3

    Cryptophasia is the name for the secret language spoken by twins. 2:27

Tapeworms Are Made Up Of Individual Males And Females

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Tapeworms Are Made Up Of Individual Males And Females

Tapeworms are parasites that live in the intestinal tract of many different types of animals. They suck their hosts dry of nutrients, and do so without even having a digestive system—they absorb the nutrients through their skin. To prevent falling out, the scolex (or head of the tapeworm) has hooks and suckers that latch on to the walls of the intestines.

03:49

from Animalist

Key Facts to Know

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    Tapeworms do not have digestive systems. 0:59

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    The head of a tapeworm, called the scolex, has suckers and hooks to attach itself to the walls of the intestinal tract. 1:15

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    Tapeworms have segments called proglottids, and each has individual muscle control. 1:42

Taste Is Mostly Smell

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Taste Is Mostly Smell

Taste and smell are closely linked. The tongue can only differentiate five flavors: sweet, salty, bitter, sour, and umami. But as you eat, odor molecules from the food move through your nasal passages to the olfactory receptor neurons. Each of these is only activated by a specific type of odor, but together, they can convey deeply complex scents and tastes to the brain.

10:30

Key Facts to Know

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    All of our senses involve sensory cells that translate stimuli into action potentials, a process called transduction. 0:56

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    Scientists estimate that humans can identify about 10,000 different smells. 4:39

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    All tastes register on all parts of the tongue—there are no specialized areas for specific flavors. 7:06

Reheating Your Pasta Could Have Health Benefits

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Reheating Your Pasta Could Have Health Benefits

Whether you're dieting or diabetic, it seems that everybody these days is going low-carb. If you're one of them, there's good news: leftover pasta that's been cooled and reheated is significantly more healthy than when it's fresh.

03:17

from DNews

Key Facts to Know

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    When you eat a carbohydrate, your body breaks it down into simple sugars and your blood glucose spikes. 0:47

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    Cooling down cooked pasta seems to make it resistant to the enzymes that break down carbs. 1:24

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    In one experiment, reheated pasta caused an even smaller glucose spike than cooled pasta. 2:27