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Why Lice Are So Hard To Kill Video Mp3 indir

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  • Published on Jan 13, 2019

  • Lice can be hard to get rid of. In fact, head lice are now resistant to many over-the-counter treatments. Turns out, lice are a problem humans have been itching to fix for over 7 million years. Lice are small, tricky to spot, and can even hold their breath for eight hours, so they’ll be fine in the shower or in a pool. They’ve also developed resistance to many of our common treatments. In the last decade, experts have developed new weapons of attack, but we still haven’t managed to eradicate them altogether. Following is a transcript of the video: You might not have known this, but ancient Egypt was an itchy place to live. Lice were rampant. Cleopatra, for example, was buried with solid gold lice combs, while other Egyptians would shave their entire bodies to try and get rid of the parasites. So, it’s a problem we’ve had for a while, and probably won’t be solved anytime soon. Humans and lice have been living together for about 7 million years when our ancestors split from chimps, and we’ve been itching to get rid of them ever since. There are 532 species of lice out there, but let’s take a look at the most common type that plagues humans: Head lice (Pediculus humanus capitis). For starters, they have six legs, and each one has a tiny hook at the end that helps them climb from one head to another, latch onto your hair, and quickly crawl down to your scalp, where they’ll feast on your blood several times a day. And once they’ve made themselves comfortable, lice are tricky to spot. Adult lice, for example, are about as large as a sesame seed, while baby lice, or nymphs, are a fraction that size. Lice are well camouflaged too, matching the color of the hair around them. Not to mention, your scalp is a perfect breeding ground. In one day, a female louse can lay up to eight eggs. Those eggs only take about a week to hatch, and once they’re 10 days old, they’ll start laying eggs of their own. While it’s rare to find more than 20 live lice on any head, there could be dozens, or even, hundreds of dead bodies lingering on your scalp. Feeling itchy yet? Perhaps even worse is that they’re a pain to get rid of. Lice can hold their breath for eight hours, so they’ll be fine when you take a shower or go for a swim. They’re also notorious for developing resistance to insecticides. During WWII, for example, militaries dusted millions of Europeans with DDT to control lice-borne typhus, and thanks to our overuse of it, lice grew a resistance to the poison. Even today, we’re seeing the repercussion from it. Many over-the-counter shampoos and lotions use similar killing mechanisms to DDT, which has made it easier for lice, in some place, to grow resistant to these treatments as well. But scientists are striking back. In the last decade, experts have developed new weapons of attack for when initial over-the-counter treatments don’t work. Like prescription ivermectin lotion, which paralyzes lice by disrupting their nervous systems. And of course, shaving your head is a cheap and surefire bet, but let’s face it, most of us probably can’t pull off that look. ------------------------------------------------------ Science Insider tells you all you need to know about science: space, medicine, biotech, physiology, and more. Subscribe to our channel and visit us at: http://www.businessinsider.com/science Science Insider on Facebook: https://www.facebook.com/BusinessInsi... Science Insider on Instagram: https://www.instagram.com/science_ins... Business Insider on Twitter: https://twitter.com/businessinsider Tech Insider on Twitter: https://twitter.com/techinsider ------------------------------------------------------ Why Lice Are So Hard To Kill

Yorumlar

  • stantaeyeon
    stantaeyeon 7 months ago

    I took a shower for 9 hours

  • Tokyoalt
    Tokyoalt 5 months ago (edited)

    Me:

  • Emilie Vall
    Emilie Vall 5 months ago

    But

  • D. Laurent
    D. Laurent 5 months ago (edited)

    Who else scratched their head watching this video

  • Clorox Bleach
    Clorox Bleach 3 months ago

    You cannot drown lice in 25 minutes underwater

  • grazia weston
    grazia weston 6 months ago

    Y’all remember when there was head lice checks at school?💀 there’s always that one kid that disappears after the check ..

  • Diego Nery
    Diego Nery 5 months ago

    Wait they can hold there breath for 8 hours

  • Blub
    Blub 3 months ago

    For some reason my

  • veevyo
    veevyo 5 months ago

    The easiest way to get rid of lice is to bleach your hair. I had lice for

  • Your Daily Dad Joke
    Your Daily Dad Joke 7 months ago

    Lice, the only thing attracted to me

  • Zalera
    Zalera 5 months ago

    I just grab them and pop them

  • Entity420 Rohan
    Entity420 Rohan 3 months ago

    Human's Scalp:

  • Zaí •
    Zaí • 2 months ago (edited)

    Im going to shower 9 hours so they will drown and DIE HAHAHA

  • ColdrenPlayz Yt
    ColdrenPlayz Yt 3 months ago

    Teacher:How to remove lice...

  • Suga stole My heart
    Suga stole My heart 3 months ago

    This is a story when I have lice:

  • FineBrother Cringe
    FineBrother Cringe 3 months ago

    When you feel an itching on your body while watching this.........

  • MxriaGacha
    MxriaGacha 4 months ago

    Watched this while i

  • Please enter a name
    Please enter a name 5 months ago

    How to get rid of lice

  • Your Daily Dad Joke
    Your Daily Dad Joke 7 months ago

    Bald people be flexing on us with their Lice free head