• 5 Things Your Hair Can Tell You About Your Health
    Articles,  Blog

    5 Things Your Hair Can Tell You About Your Health

    [ intro ] If you’ve ever dyed your hair the colors of the rainbow, or gotten a dramatic updo for a special event, you know that we often use hair for more than just keeping our heads warm. It can be an expression of our personalities, too. But how your hair grows — or doesn’t — can also be a sign about your personal health. And while that’s really convenient and everything, it’s also… pretty weird. Like, your hair is basically just a bunch of protein clumps, so it doesn’t seem like it should be able to tell you about other things happening in your body. But in reality, it’s…

  • Nature’s Mood Rings: How Chameleons Really Change Color | Deep Look
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    Nature’s Mood Rings: How Chameleons Really Change Color | Deep Look

    I don’t know about you, but I thought to be chameleon-like was to be someone who could fit in anywhere. Adapt. Blend in. Turns out that is all wrong. Chameleons don’t change color to match their environment. In fact, it’s just the opposite. Their baseline is camouflage. When chameleons are relaxed, they’re mostly green. They naturally blend into their home in the forest canopy. They even mimic leaves by dancing around a little. But when they feel threatened, or annoyed, or just want to show a little swagger – that is when their color changes. They transform into living mood rings. Chameleons change color to make a statement. The faster…

  • How Mosquitoes Use Six Needles to Suck Your Blood  |  Deep Look
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    How Mosquitoes Use Six Needles to Suck Your Blood | Deep Look

    This is the deadliest animal in the world. Mosquitoes kill hundreds of thousands of people each year… the most vulnerable people: children, pregnant women… No other bite kills more humans… or makes more of us sick. So what makes a mosquito’s bite so effective? For starters, they’re motivated. Only females bite us. They need blood to make eggs… And a pool of water for their babies to hatch in. Even a piece of trash can hold enough. At first glance, it looks simple — this mosquito digging her proboscis into us. But the tools she’s using here are sophisticated. First, a protective sheath retracts – see it bending back? If…

  • Liquid Nitrogen and Fire!
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    Liquid Nitrogen and Fire!

    Frostbite Theater presents… Cold Cuts! No baloney! Just science! I’m a little bit afraid to ask this next question because I think I already know the answer, but is anyone in here feeling a little… dangerous? You’re willing to take a chance? Because I am willing to do an experiment they haven’t let me do since ‘The Incident.’ Now, because of the danger, I cannot have a volunteer. I must do this on my own. [Audience] Awww… And, because of the lawyers, I need everyone to raise their right hand and repeat after me. Say ‘I promise.’ [Audience] I promise. Not to try this at home. [Audience] Not to try…

  • Dissection Basics | Removing Superficial Layers
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    Dissection Basics | Removing Superficial Layers

    Hi I’m Cristina Prall. In this video I’ll show you some basic skinning techniques that will be helpful in lab. The goal of skinning is to remove the superficial most layer of skin in order to see what lies deep to it. One of the most intimidating aspects of dissecting for beginners can be estimating just how deep to make that first incision. Although the cutaneous and subcutaneous layers of tissue will be removed throughout the dissection- important structures such as cutaneous nerves and superficial veins do exist within these layers. So if you are trying to maintain any superficial layers you will want to only remove the skin. So…

  • How Houdini DIED (in Slow Motion) – Smarter Every Day 108
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    How Houdini DIED (in Slow Motion) – Smarter Every Day 108

    Hey it’s me Destin, welcome back to Smarter Every Day. So did you realize that Harry Houdini was the first person to fly an airplane in Australia? I didn’t either, that’s crazy. In fact this guy’s whole life was interesting because he lived it out daily cheating death in front of thousands of people. Now this eventually caught up.. What’s in your ear? Oh, it’s a rock in your ear. Magic. So this is convenient because Harry Houdini was Jewish, and it’s a Jewish custom if you’re going to honor the dead to go and lay a rock on top of their tombstone. Why don’t we do that? Let’s go…

  • Protect yourself from skin cancer pt. 2
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    Protect yourself from skin cancer pt. 2

    The best way to monitor changes in your skin to do a thorough head-to-toe exam on your body every month to watch for changes over time using a well-lit bathroom and a hand mirror to view hard-to-see areas. Many people neglect the bottoms of the feet the behind their back or possibly even under an armpit Areas where you wouldn’t seem to look every day. The most important thing is to learn where your moles are their usual look in their usual feel. Checking for anything new an easy acronym to use is Abcde Early Detection of skin cancer is key and it gives you the greatest chance for success…

  • Getting stuck in the negatives (and how to get unstuck) | Alison Ledgerwood | TEDxUCDavis
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    Getting stuck in the negatives (and how to get unstuck) | Alison Ledgerwood | TEDxUCDavis

    Translator: Tijana Mihajlović Reviewer: Ellen Maloney Hi everyone. Gosh, I wish I could dance, but I can’t, and you really don’t want me to. So instead I thought I would talk a little today about how people think. I’m fascinated by this question. I’m a social psychologist, which basically means I’m a professional people watcher. So, this is what I do; I try to figure out how humans think and how we might be able to think better. Here’s something I noticed a few years ago about how I seem to think; here’s a typical week in my life, which usually seems to revolve entirely around publishing papers. So here…

  • Self-sterilising microneedles revolutionising vaccination and drug delivery
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    Self-sterilising microneedles revolutionising vaccination and drug delivery

    I’m Professor Krasimir Vasilev from the School of Engineering at the University of South Australia. Some time ago we started research on microneedle technology for transdermal delivery of therapeutics – microneedle patches. These patches consist of an array of microneedles that are about 700 microneedles in length and are made of biodegradable polymers. Since the needles are only 700 microns in length, they do not reach the hypodermis or the blood vessels, which makes them very painless to use. Other benefits, for example in terms of vaccines, is avoiding the cold chain supply chain that is required in vaccination. Since the therapeutics are mixed in the polymer in the dry…

  • Why Do We Have Different Skin, Hair and Eye Color?
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    Why Do We Have Different Skin, Hair and Eye Color?

    We have a wonderfully diverse and beautiful world filled with millions of species of both animals and plants. At the top of the food chain sits us human beings – the most dominant of predators. Us homo sapiens all share similar characteristics with one another, but in the details we can vary dramatically. We don’t all look and sound the same. We don’t think the same. But why is this? Why do we differ in eye color, skin tone and hair? That’s what we will find out in today’s Infographics Show – Why do humans have different skin, hair and eye color? First let’s look at the science of skin.…