A guy named Chris from a small town in England didn’t let his wife or his friends throw out beer bottle caps for 5 years. Neither the wife, nor his friends knew what it was all about, but simply helped Chris at his request.

Sir David Attenborough researches the life of ants in Australian mangroves in this fantastic BBC footage. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/

See here, the meanings of the word dull, as video and text. (Click show more below.) dull (adjective) Lacking the ability to cut easily; not sharp. All these knives are dull. dull (adjective) Boring; not exciting or interesting. He sat through the dull lecture and barely stayed awake. dull (adjective) Not shiny; having a matte finish or no particular luster or brightness. Choose a dull finish to hide fingerprints. A dull fire or lamp;  a dull red or yellow;  mirror. dull (adjective) Not bright or intelligent; stupid; slow of understanding. dull (adjective) Sluggish, listless. dull (adjective) Cloudy, overcast. It's a dull day. dull (adjective) Insensible; unfeeling. dull (adjective) Heavy; lifeless; inert. dull (adjective) Not clear, muffled. dull (verb) To render dull; to remove or blunt an edge or something that was sharp. Years of misuse have dulled the tools. dull (verb) To soften, moderate or blunt; to make dull, stupid, or sluggish; to stupefy. He drinks to dull the pain. dull (verb) To lose a sharp edge; to become dull. A razor will dull with use. dull (verb) To render dim or obscure; to sully; to tarnish. Reference: dull January 24, 2019 Please support us with your SUBSCRIPTION!

Bananas: a great source of potassium, an excellent source of vitamins, and—as everyone knows—the most recognizable fruit on the planet. After all, you don't come across many fruits that look like crescent moons. (Or… Um… Something else.) Moreover, not every banana is the same. Some are more curved, some are less. What's the deal?

Why does ice float in the cool summer drink of your choice? And why don't ponds and lakes freeze from the bottom up, killing all the fish? Find out with the latest Naked Science Scrapbook, where we'll see that it's all down to the weird and wonderful water molecules...More videos and podcasts from http://www.thenakedscientists.com

A little interaction I witnessed in a UK Stamp Collecting Group that Ben added me to. Got a little too exciting for me TBH!

What to do with a stamp collection? If you inherited a stamp collection, here is a set of instructions about how to store, value, keep or sell the stamps. Dealers: APS (USA) : https://stamps.org/Dealers PTS (UK): http://thephilatelictraderssociety.co.uk/member-search/ Donate your stamps: USA: stamps.org UK: Stampactive https://www.stampactive.co.uk/about-us/ ASPS: http://www.scottishphilately.co.uk/index.php OxfamGB: https://www.oxfam.org.uk/donate/donate-goods/what-you-can-donate/donating-stamps-and-coins Stamp Show Videos: Visiting a Stamp show: https://www.youtube.com/watch?v=5bImEro1G30 Stampex: https://www.youtube.com/watch?v=-sZC-Jpm5dg&t=40s Stamp Art! Art Stamped: https://www.artstamped.com/ Video: https://www.youtube.com/watch?v=-sZC-Jpm5dg&t=40s Additional Resources APS "Inherited a Stamp Collection": https://stamps.org/Inherited-a-Collection Punk Philatelist: https://punkphilatelist.com/2015/07/21/i-found-an-old-stamp-album-am-i-rich/ PTS "Value My Stamps": http://thephilatelictraderssociety.co.uk/value-my-collection/

Nothing says "nature" like a lush green forest. But why are plants green in the first place? Hosted by: Stefan Chin SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, Scott Satovsky Jr, Charles Southerland, charles george, Alex Hackman, Chris Peters, Kevin Bealer ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://science.sciencemag.org/content/sci/368/6498/1490.full.pdf https://science.sciencemag.org/content/sci/suppl/2020/06/24/368.6498.1490.DC1/aba6630-Arp-SM.pdf https://www.eurekalert.org/pub_releases/2020-06/uoc--wap061820.php http://agron-www.aRadiationSpectrumgron.iastate.edu/courses/Agron541/classes/541/lesson09a/9a.3.html Image Sources: https://commons.wikimedia.org/wiki/File:Plagiomnium_affine_laminazellen.jpeg https://commons.wikimedia.org/wiki/File:Bryum_capillare_leaf_cells.jpg

If men can't nurse, then why do they have nipples? The answer has less to do with evolution and more to do with your personal development as a teeny tiny embryo. Short version: We're all girls -- at least at first. Hank explains! Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? 

Here's a quick video on the Coriolis effect! music by: https://www.bensound.com/

Learn from my mistakes. I've made dozens of epoxy tables and each time I learn something new and this build was no exception. Follow along my step by step guide to making your own DIY epoxy and wood table in this thorough build. I even tried an all new extra deep pour epoxy that had some very interesting results. Want to build your own epoxy table? Check out my epoxy table virtual workshop: https://workshops.blacktailstudio.com/ Related blogs/videos: How to Make Epoxy Table blog: https://www.blacktailstudio.com/blog/how-to-make-an-epoxy-resin-table How to get a perfect finish: https://www.youtube.com/watch?v=Qv_cOr9Usn4&t=298s Photography tutorial: https://www.youtube.com/watch?v=QG-qEyRg77U Flatten tables at home: https://www.blacktailstudio.com/blog/live-edge-for-beginners-slab-flattening Items used in this video: Liquid Glass Epoxy 3 gallon: https://amzn.to/2QiYev0 Liquid Glass Epoxy 1.5 gallon: https://amzn.to/2wT7uPw Sandpaper storage bins: https://amzn.to/33jY5vd Black CA glue: https://amzn.to/2TxwpzO Threaded inserts: https://amzn.to/311LdZd Photography backdrop holder: https://amzn.to/2AWUS8L Paper backdrop: https://amzn.to/2M2cvKH Osmo 1101: https://amzn.to/35hJmmh Osmo 3043: https://amzn.to/3iIRPFa Osmo 3011 (3043 alternative): https://amzn.to/3gUUz1u Gem Orbital: https://amzn.to/3btzKqZ White buffing pad: https://amzn.to/310F0Nb Track Saw: https://amzn.to/2VqUSaA Mold release: https://amzn.to/35o5n2K Wire Wheel: https://amzn.to/326FDpK Black transtint: https://amzn.to/39TptnB Caulk: https://amzn.to/35o5BH8 Melamine (form material): https://www.homedepot.com/p/Veranda-Melamine-White-Panel-Common-3-4-in-x-4-ft-x-8-ft-Actual-750-in-x-49-in-x-97-in-461877/100070209 Dewalt track clamp: https://amzn.to/2AX4TTB Website: https://blacktailstudio.com/ Instagram: https://instagram.com/blacktailstudio Facebook: https://facebook.com/blacktailstudio 0:00 Intro 0:27 Slab Cleanup 1:29 Choosing a Layout 1:41 Cutting To Size 2:27 Sealing The Slab 4:02 New Deep Pour Epoxy 4:54 Choosing Epoxy Color/Dye 5:47 Epoxy Pour 7:22 Filling Holes With Epoxy 8:11 Checking Epoxy Temperature 8:42 Removing Epoxy Table From Mold 9:22 Flattening the Table 10:20 Sanding Techniques For Wood and Epoxy 10:43 Fixing Small Holes In Epoxy and Wood 11:26 Finishing With Osmo Hardwax 13:46 Attaching the Steel Table Base 14:40 Installing Threaded Inserts 15:55 Product Photography

Bridges built over water are marvels of engineering no matter how shallow or deep the water may be. But how exactly are these bridges built, particularly over deep water? It turns out there are three main techniques for the construction of such bridges and they are battered piles, cofferdams, and caissons. To get the latest science and technology news, subscribe to our newsletter “The Blueprint” at https://bit.ly/3BDdN5e #engineering #bridges #architecture

Why is it faster flying from west to east? The fastest commercial flight ever was in February 2019, when an airplane flew at the speed of 801 mph. And that was only thanks to the direction it was heading in: east. By the way, passengers there also rapidly lost weight! What? The airplane diet? Is that a thing? All in due time, though. How about learning some mind-blowing facts about airplanes? What are the safest seats on a plane? Why don't planes have parachutes on board? Why does your plane suddenly decide not to land straight away but make a circle around the airport? Can an autopilot land a plane by itself? About this and much more you will learn from the video! TIMESTAMPS: Why planes don’t have parachutes 0:42 The safest seats 1:09 A blanket can be... dangerous? 2:09 The bathroom can be opened from the outside 2:33 Why flights are shorter west to east 3:08 And why you weigh a tiny bit less 3:42 Travel over the North Pole 4:03 Why planes make a circle around the airport 4:28 Can you get inside the cockpit? 5:10 Can an autopilot land the plane by itself? 5:58 Pilots' oxygen masks are designed to last much longer 7:21 Why pilots try to avoid landing on the water 8:05 Why seats are blue 8:52 What are those numbers on your boarding pass? 9:09 #planes #aviation #brightside Other videos you might like: 33 Little-Known Airport Facts to Travel Easier https://www.youtube.com/watch?v=82suLsvc-oY& Pilots Reveal 16 Nuances That Make Your Flight Safe https://www.youtube.com/watch?v=XVYXErxau-U& 10 Things You Didn’t Know About Flight Attendants https://www.youtube.com/watch?v=V1neQzgKL38& Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.facebook.com/brightside/ Instagram: https://www.instagram.com/brightgram/ 5-Minute Crafts Youtube: https://www.goo.gl/8JVmuC Stock materials (photos, footages and other): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ---------------------------------------------------------------------------------------- For more videos and articles visit: http://www.brightside.me/

Does the water really spiral one way down the plughole of a bath in the Northern Hemisphere and the other way in the South? Folk wisdom has always suggested that it might be so. But has anyone bothered to check – scientifically, that is? The question of which way the water whirls isn’t easy to settle. Complicating factors are at work. Is the bath precisely level and symmetric? And how much are the contents of the bath, and hence the vortex, disturbed when someone gets out of the bath? According to theory the water should swirl in the opposite sense in the two hemispheres because of the Coriolis effect. This is best understood by thinking about an ice skater who’s doing a pirouette. The more she pulls in her arms, the faster she spins. A basic law of physics, the law of conservation of angular momentum, tries to keep the hands turning at the same speed when close to the body as when outstretched. A similar thing happens when you travel north or south from the equator on the spinning Earth; nature strives to maintain your eastward speed as you leave the large circle of the equator (equivalent to outstretched arms) and move to smaller orbits (equivalent to pulling your arms in). Consequently, all things heading away from the equator get a small eastward nudge, while objects moving toward the equator are pulled westward. Strange effects can ensue. For instance, if a cannonball were fired from the equator at a target exactly north of it, the ball would be moving at 1,000 mph (as would be the cannon and everything else on the equator) when it left the cannon's mouth. Its target to the north would be moving eastward more slowly, however, and so the ball would land to the east of its intended mark. The Coriolis effect complicates the navigation of high-speed planes and missiles and has a decisive influence on the circulation patterns of oceans and winds. But what about the water in a bath tub? Just before it disappears over the edge of the drain, the water heading toward the equator is nudged to the west and the water approaching from the other side of the plughole, moving away from the equator, is pushed to the east. The result: a Coriolis tendency for the water in, say, Newcastle, England, to spiral counter-clockwise and in Newcastle, Australia, to spin the other way. But it is a very, very small tendency. And, in practice, commonsense insists it must be completely masked by other factors, such as the random disturbances caused by getting out of the bath and pulling the plug, or the geometry of the bath. Casual observation confirms this and it is not unusual to see the water reverse its direction of rotation even during a single outflow. The fact is, the water in an ordinary bathtub, sloshing about with all manner of currents, hasn't a chance of showing an effect that really only comes into its own over large differences of latitude. And yet, under strict laboratory conditions the Coriolis effect can be detected. Experiments carried out, appropriately enough in Watertown, Massachusetts, in Cambridge, England, and in Sydney, Australia, all gave positive results. The Australian team concluded: "We have acquired confidence in the hypothesis that carefully performed experiments on liquid drainage from a tank will show clockwise rotation, if done in the Southern Hemisphere." #water_swirl #coriolis_effect #direction

We have heard the theory: water going down the drain spins in different directions depending on which hemisphere you're in. But what if you are at the Equator and then move a few meters towards the Southern hemisphere, then move back towards the Northern hemisphere and try the same thing? Can a few meters make a difference? Watch this and let us know your thoughts! Source & embed code: https://rumble.com/v2ze9q-water-rotation-in-the-two-hemispheres-and-on-the-equator.html For licensing, please email licensing@rumble.com

Watching Paint Dry Credit to: Myself, since this video was entirely self made this time, as will all future videos be due to YouTube's new 'Duplication' rules. And no, this one isn't a picture! Ha!

Cutting Board Hobby Turned Business Overnight Part 2 Large production run of 68 cutting boards in my tiny shop here in Alaska. This is the continuation of my cutting board hobby and my YouTube hobby both turning into a business simultaneously. Part 1 https://youtu.be/1zo6fV_XrcA After the last cutting board video took off here on YouTube I was receiving about 20 cutting board requests a day for a few weeks. This is the story on how those events unfolded in sequence (over 6 weeks) to share with you guys and gals, how my cutting board hobby / side job turned into an opportunity for a business practically overnight. Along with the ups and downs of trying to make it all happen on a larger scale. I also have included plenty of woodworking tips and tricks, how to, and details on how I make these boards from start to finish. I kindly ask if you are going to copy my designs that they are for personal use only. Please take what you got from this and make it your own :) Boards and other products sold on my website https://www.krisdevo.com/ Social Media / business sponsorship inquiries - krisdevo@influint.co At the request of a few amazing people I have set up donation links for those who want to take another step in supporting me and this channel. Support- https://paypal.me/devoswoodcraft?locale.x=en_US For all BEHIND THE SCENES! -- Starting 11/5/2023 I will be uploading weekly behind the scenes to Patreon. A personal Vlog of sorts of my woodworking and Alaska life. See whats coming up before the videos come out. https://www.patreon.com/krisdevoalaska DeVo's WoodCraft page: https://www.facebook.com/Devoswoodcraft Kris DeVo's Photography: https://www.facebook.com/KrisDeVoAlaskanAdventures https://www.instagram.com/devoswoodcraft Contact Kris DeVo: https://www.krisdevo.com/contact Tip$, tools, a letter, a postcard or whatnot. My business box to receive mail; DeVo's WoodCraft 11471 Business BLVD, Unit 773503 Eagle River, AK 99577 USA Affiliate links: Tools and supplies I use here- Amazon store - https://www.amazon.com/shop/devoswoodcraft 10% off Laguna parts and accessories. Blades (ReSaw King!), abrasives, cnc parts, replacement parts, power feeder, etc). Sign up, create an account and use DEVO10 for 10% off- https://www.shop.lagunatools.com/ An amazing book by Bob Taylor! A must read for makers! Guitar Lessons: A Life's Journey Turning Passion into Business https://amzn.to/39nx9jn Awesome CA glue! StarBond Use: DEVO15 at check out for 15% off https://www.starbond.com/?rfsn=5517372.b6d028&utm_source=refersion&utm_medium=affiliate&utm_campaign=5517372.b6d028 Maverick Abrasives sand paper. Good stuff at a great price. Use: DEVO10 at check out for 10% off https://www.maverickabrasives.com/discount/DEVO10/?rfsn=5543188.46bc22&utm_source=refersion&utm_medium=affiliate&utm_campaign=5543188.46bc22 Sandpaper abrasive cleaner stick https://amzn.to/3mmQZSu My favorite tape. Best thing ever- https://amzn.to/3Xw5HYr Bandsaw feather board https://amzn.to/3sVdoHo Bandsaw feather board t track anchor bar https://amzn.to/3eaQec4 Bandsaw feather board extension https://amzn.to/3qjtRn9 3m hearing protection with tunes https://amzn.to/3uSR0Af Diablo table saw blade 40t https://amzn.to/3yet4sS Diablo table saw blade 24t https://amzn.to/33TJTvj DeWalt folding work table https://amzn.to/3hMLxH7 Helical head, Shelix from Bird tool. OEM https://amzn.to/3uNxF5M Combo belt - disc sander https://amzn.to/38HFnlo Sandpaper cleaning stick https://amzn.to/3yILClo Festool RO 150 sander https://amzn.to/2WO8DBB Festool MFT clamp table https://amzn.to/39hHrlN Sandpaper storage https://amzn.to/3iLCEgX Drum Sander https://lagunatools.com/classic/sanders/19-38/ My planer https://amzn.to/3pNnZ6H Table saw https://amzn.to/391pisf Pony bar clamps https://amzn.to/31MDpND Zero clearance insert https://amzn.to/35Q9ib1 Dust collection https://amzn.to/2UQ61SA Super cheap and awesome air filtration https://amzn.to/3flP3oP Skill saw https://amzn.to/2WUuS97 Skill saw kit https://amzn.to/34TrGil Dewalt drill and impact kit https://amzn.to/3pyvWMi Router https://amzn.to/3mYoEj3 Dewalt chop saw https://amzn.to/3mWRwrK Tool/Vac auto switch https://amzn.to/2KIYsfd Jet benchtop lathe https://amzn.to/37TrotC Lathe chisel set https://amzn.to/2ODVzOx ingersoll rand air compressor 60gl https://amzn.to/3mVHvLy 8" VS bench grinder https://amzn.to/3pz9SAO Bar clamps https://amzn.to/3if7ldc Howards Butcher block oil https://amzn.to/35Q9OFZ Mineral oil https://amzn.to/2Mb9I4u Food safe glue https://amzn.to/2Lu659j Disclaimer: Please do not attempt to do anything you see in these videos unless you are 100% comfortable in using these tools. I am a professional and have been using these tools and more for 30 + years. Some techniques I do are not recommended. You are 100% reliable for your own safety and comfort level of using these types of tools. .

Bob Ross fans! It’s ‘time’ for some happy trees, and we’ve got just what you need: https://pxlfy.me/BobRossWatchMightyMojoToys Bob Ross, the host of television's favorite art show The Joy of Painting, paints one painting - Grandeur of Summer - with complete instructions for you to follow in this exclusive 60 minute video. Bob goes into the entire ''how to'' details for each painting providing you with excellent reference tools for your home studio. This episode was never seen on television! Subscribe for full length episodes! -- http://bit.ly/BobRossSubscribe

SUBSCRIBE to help our unintentional ASMR collection grow http://bit.ly/UASMR and hit that 🔔. Looking for a video to help you sleep tonight? How about a soft spoken British man reading an encyclopedia? OK, so this may be a left field choice for unintentional ASMR but here is a really boring video to put you to sleep quickly. For more sleep aid videos like this and for general help falling asleep, see http://ineedtosleepnow.com. Recording by Peter Yearsley this is a soft spoken British man reading an encyclopedia, specifically topics under the letter c. Accompanying these sleepy sounds is the relaxing video of waves crashing up on a Canadian beach. For the original audio for this video, see here: https://youtu.be/gvulCBAIweA EXCLUSIVE: You can get 10% off any SleepPhones products with the code SLEEPNOW here: https://bit.ly/2YrrKQC I'm trying to compile the best unintentional ASMR videos on the internet. If that sounds like your thing, then subscribe HERE https://goo.gl/QLm8Qw and hit that 🔔. BEST ASMR PLAYLISTS: Medical ASMR: http://bit.ly/MedicalASMR Female ASMR: http://bit.ly/FemaleASMR Best of the best: http://bit.ly/BestUnintentionalASMR Celeb ASMR: http://bit.ly/CelebASMR Show and tell ASMR: http://bit.ly/ShowTellASMR Relaxing interviews: http://bit.ly/InterviewsASMR WHAT IS UNINTENTIONAL ASMR? https://ineedtosleepnow.com/what-is-u... 🙂 Finding, editing and uploading these videos does take some time and I try to upload a new video each night. If you find these videos useful, please consider supporting us by doing your Amazon shopping through our affiliate link: https://www.amazon.ca/shop/pureuninte... ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ WANT TO MAKE A RECOMMENDATION? Contact us via: Facebook ► https://www.facebook.com/uASMR/ Twitter ► https://twitter.com/AccidentalASMR 🔴 In case this channel is removed, please subscribe to our newsletter for updates on new videos locations: http://eepurl.com/ds-orr. We will never email you about anything other than a new channel. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ More of the Pure ASMR channels: Pure ASMR: http://bit.ly/PureASMR and hit that 🔔. Pure Unintentional ASMR 2: https://bit.ly/PureUASMR2 Pure Natural ASMR: http://bit.ly/NatureASMR Pure Audiobook ASMR: http://bit.ly/AudiobookChannel Purr ASMR: http://bit.ly/CatASMR ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ NOTE: This video is being shared for #unintentionalASMR reasons only. The video has been edited from its original format for this purpose. WHAT IS ASMR? http://ineedtosleepnow.com/what-is-asmr ASMR definition: http://ineedtosleepnow.com/asmr-defin... http://iNeedToSleepNow.com is a YouTube channel and website that curates calm softly spoken voices that serve as great unintentional #ASMR. This channel focuses primarily on soft speaking, calm softly spoken voices, unintentional ASMR interviews, relaxing voices, ASMR tingles and anything that helps you sleep. Disclaimer: Some of these links are Amazon affiliate links where I'll earn a small commission if you make a purchase. Shopping through these links is a great way to support the channel so I can keep making more videos for you. Thanks!

We asked a dermatologist to explain the scientific reasons that some men aren't able to grow thick, dense facial hair. Dr. Jennifer Chwalek is a Board Certified dermatologist at Union Square Laser Dermatology in New York. Chwalek explained that an inability to grow thick facial hair is not directly related to low levels of testosterone. Facial hair growth is largely determined by genetics, which can determine the number of hair follicles a person has, as well as how the follicles react to a byproduct of testosterone known as dihydrotestosterone. ------------------------------------------------------ #Beard #FacialHair #ScienceInsider Following is a transcript of the video: Narrator: Look at that beard. The density. The thickness. It's what a beard is supposed to be! Not this. This is my beard, if you even want to call it a beard. This footage was taken after I let it grow for two weeks. Two weeks! It's thin, patchy, and in some spots there's no hair at all. Sad. But let's look at this one again. This is Kevin. We're around the same age, both Caucasian males of Irish descent. You could say we have a lot in common, except in the facial hair department. So, I asked a dermatologist about why he's able to grow a beard and I'm not. Dr. Jennifer Chwalek: It's based on genetics as well as hormones. Some men, you know, have more hair follicles, so they can grow denser, coarser beards than others. Testosterone gets converted in the hair follicle to a more potent form called dihydrotestosterone. Some hair follicles have receptors on them that are very sensitive to this higher form of testosterone, dihydrotestosterone, and that will stimulate hair growth. Graham Flanagan: How would you characterize my facial hair? Dr. Chwalek: I'd say it's like, sparse, and you have light-colored hair, so it doesn't show up quite as much. Flanagan: I can't really grow a great beard. It's been a problem. I want one. I wanna look like my colleague, Kevin. I mean, look at that beard. It is just glorious. Why can't I grow a beard like Kevin? Dr. Chwalek: Well, Kevin has some good hair genes, so because of that, the hair follicles on his face are more sensitive to the effects of a form of testosterone called dihydrotestosterone which can help to stimulate thicker, coarser, longer hair growth in some areas of the body like the beard area. Narrator: Beards and facial hair have long been associated with masculinity and virility. I began to wonder if my inability to grow thick facial hair like Kevin makes me less of a man. Flanagan: Does the fact that I can't grow a beard, does it make mean that I have low testosterone? Dr. Chwalek: No. Men who can't grow a beard or have patchy beards usually have normal testosterone levels. It isn't a reflection of having low testosterone or being deficient in testosterone. Flanagan: So, you can still be virile — Dr. Chwalek: Right. Flanagan: And grow a crappy beard like this? Dr. Chwalek: Yes. Flanagan: Okay, good. Narrator: And in fact, there are some ways to increase the chances of growing facial hair, but shaving more often isn't one of them. Dr. Chwalek: So, the idea that shaving can impact hair growth is actually a myth. When you're shaving, you're just cutting the hair off at the surface of the skin, and what's controlling the hair growth is really occurring deeper in the skin. So, it shouldn't have any impact on how quickly the hair grows, or how dense the hair grows. People have tried topical Rogaine or Minoxidil. These things may stimulate a little hair growth, but assuming it's due to genetics, then you're kind of stuck with what you have. Flanagan: It's all about the sensitivity of the hair follicles and how they interact with this — Dr. Chwalek: Dihydrotestosterone or androgens in the blood. Flanagan: So, you're saying that, that his hair follicles are "sensitive." Dr. Chwalek: Yes. Flanagan: See, mine aren't. Dr. Chwalek: Right. Flanagan: They aren't sensitive. They're like rocks. They have no sensitivity at all. Okay, so I win that! Dr. Chwalek: Right. 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/BusinessInsiderScience/ Science Insider on Instagram: https://www.instagram.com/science_insider/ Business Insider on Twitter: https://twitter.com/businessinsider Tech Insider on Twitter: https://twitter.com/techinsider ------------------------------------------------------ Why Some Men Can't Grow Beards

Why do we yawn? If you think the answer is BOR-ing, then maybe your brain's just overheated. Let Hank explain the new thinking behind why we ... hold on ... *yawn*. Excuse me. Help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.upenn.edu/gazette/1109/expert.html http://news.nationalgeographic.com/news/2011/11/111115-yawning-mystery-brains-sinuses-health-science/ http://www.nytimes.com/2007/07/03/health/03insi.html?_r=0 http://serendip.brynmawr.edu/exchange/node/1912 http://www.loc.gov/rr/scitech/mysteries/yawn.html http://www.smithsonianmag.com/science-nature/why-do-we-yawn-and-why-is-it-contagious-3749674/?no-ist https://www.princeton.edu/main/news/archive/S31/64/49G23/index.xml?section=newsreleases http://www.psychologytoday.com/blog/brain-sense/201111/why-do-you-yawn-when-youre-not-sleepy http://www.epjournal.net/wp-content/uploads/ep0592101.pdf

Not sure what happened to this upload yesterday as it decided to go blank and not show any video or sound. Youtube could not fix it either so here we are round two. I thought this would be a good place to start for a new fishkeeper, or maybe you are already an aquascaper wanting to make sure you have everything. This video builds a good foundation before I set up more aquariums on the channel. In this episode we go through everything you need to start up a successful community fish tank. We go through everything: filters, heaters, led lighting, tap safe etc. Once I start setting up new aquariums on the channel, any of you wanting to know the shopping list for a new fish tank can come back to this video and work out what you need.