hank: "then everything changed-" me: "WHEN THE FIRE NATION ATTACKED... "

Great pun there at the end, Hank. Your magnetic personality and sense of humour shine through.

WAY COOL HANK. YOU MAKE MY WEEKS. THANKS SO MUCH.

I love scishow:) thanx for all of the awesome sciency news and such, Hank!

one of my favorite things to do is to go driving get lost and find my way out. I tend to always have a general sense of where I am. that's a cool explanation for it! can't wait to see further developments.

This is awesome, I'm learning about this in my AP Biology class right now in our animal behavior unit, thanks Hank :)

Best part of my day. Love you Hank.

2:52 Lol, I love how he just has that "I just made a very good pun" face haha.

It would be great to have an episode about Closed Ecosistems, Ecospheres, Project Eden and so on. Just to know what kind of interactions could be done in a small space :D Thanks Hank!

Thank you for doing this video. I am compiling information to present to people wanting to understand how my animal magnetism hypnosis has been working. Thank you for breaking it down this way. :)

2:53 Hank your Sarcastic face you make is so darn hilarious.

Love this channel!

You have a good sense of direction

In my top 10 favourite KZfaq channels of all time.

Good episode Hank! Can you do one on genetic engineering and amplifying characteristics of humans (speed, strength etc) thanks !

"We just can't figure out how the frick they're doing it" Love it! Hank, you are so adorable.

noticed a typo, thought I'd let you know, although someone has most likely already brought it up but when you mention the Ludwig Maximilan University the caption that pops up says LuGwig :) I really enjoy your show, keep up the good work, greetings from Hungary :)

I'm no Hank, nor am I a chemist, but the basic gist is that: -Some atoms have more neutrons to counteract protons from being repulsive to each other. -These neutrons add more mass. -The extra mass causes instability. -The atoms break down, releasing radiation. -A half-life is the time it takes for these elements to lose half of their material. Hope this is helpful.

I'm not doing my pre-cal homework but I'm watching sci-show so it's close enough, right? damn it why does science have to be more interesting that translations and dilations?

This is the insight that one of the people my dad knows gave on why cows always face the same direction - We've spent so much time and money doing studies on this and he just says, "Cows travel in grazing herds. They're always moving, so they all have to be moving in the same direction, thus they face the same direction."

OMG. that's what I do too except with my room! I always tell people I know where north is and they never believe me but I'm rarely ever wrong. I've been searching for forever to find someone else who can do this. You have no idea how happy I am to know I'm not the only one.

This video was really something. Very charged.

I LOVE YOU HANK

Just a comment to support you guys~

The Idea of seeing magnetic field is really an attractive ability

YOU ROCK, HANK GREEN!!!

I love how bad puns can be made less painful w/ video editing!

I loved the pun at the end!

I seem to have a knack for knowing which direction is which. For example, driving on a windy road through a heavily-forested area (where all you can see is trees, trees and more trees) that I've never been along before, and with all those corners and turns I still seem to know which general direction I've come and which direction I should be going. I've always thought it could be some sort of subconscious "directional memory", but cryptochrome? Interesting...

I am always able to point North, my friends once tested me by blindfolding my and spinning me on an office chair, I still managed to get it right even though I was dizzy. I also have a great sense of direction. Aside from in the supermarket when I was a small child and toddled away from my mother, I have never gotten lost in my life.

I agree with cog3125. I have a tendency to get lost a lot especially now that I've moved to a new city but whenever I'm trying to follow directions and I get lost I find that I always seem able to navigate my way back to a familiar place, and thus I am able to get back home. I also find that when I am out in the forest because I'm camping or when I used to be a field biologists, I also had a good sense of direction on foot.

0:28 "But then everything changed," When the Fire Nation attacked.

jees, i looked up the air date for that show and apparently it aired from 2005 to 2008. feels like yesterday

That half-second of a smile at 2:54 is priceless

I live in the Plains, since I worked in the oil fields I spent more time outdoors than many farmers/ranchers, and never noted a North/South orientation, other than their butt to the North in a cold Winter wind. I have paid more attention ever since persons basing the observations based solely on photographs put out their theory. Here on Terra firma I don't notice cattle universally facing either North or South. In the event that domesticated grazing animals where left to their own devices they would migrate like the wild Bison, and humans have always migrated, following the food sources. There are so many factors that could be at play, I think it's jumping the gun to say cattle can sense the Earth's magnetic field.

I came for the topic. I liked for the pun. ;D Great edition!

Good show

Oh the pun, THE PUN!! Genius. Interesting episode, would you mind not sparing me the details about how the unpaired electrons react to magnetic fields?

I love that show.

Very much agreed! Psychology is fascinating and there's loads of interesting research for SciShow to cover. Like Brain Computer Interfaces with which you can control a computer, using only your mind! So yes, I vote for PsyShow!

Holy... the part about cryptochrome blew my mind. I recognised free radicals from a PBL session about animal cell organelles (peroxisomes specifically). This is too interesting. Must resist the urge to look it all up at midnight when I have a lecture to attend early tomorrow.

Nice one liner at the end there.

Once I read about a belt that vibrates when you're pointing to the North. After 6 months using this belt without removing it you should be able to point where the north is in any place in the world. Is this true?

Note that many birds *do* still navigate using the stars and other heavenly features! There have been some really cool experiments demonstrating this by raising birds in planetaria.

the face he made when he said ''you might say that magneto reception is a field of research that we're still feeling our way through'' XD

That face at the end... We're "feeling" our way through it LOLOLOL

Bees do use the sun to navigate and use the sun as a reference when they "dance" to pass information (such as a nectar source) on to other bees. They also can see in infrared and ultraviolet. They are quite amazing and I wouldn't be surprised if they have magnetic receptors too.

My dad worked as a biologist at a university. They did some research on this by blindfolding a lode of students putting them on a bus which brought them to an unknown place and asked them to point towards where they thought home was.

Only Hank, master of knowledge, could stop them, but when the world needed him most, he vanished.

feeling our way through.... I see what you did there hank.

My theory why people are horrible with direction is because we tend to have a lot of obstacles in the way. The reason why I have a fairly decent sense of direction is because I remember how to get from pt. A to pt. B in a straight line, rather than making a turn there, or walk into that street, etc. I just try to stay on that straight line path, and unless I meet a dead end, I usually find my way.

yay new videos

THAT'S FREALIKIN AWESOME!!!

212! I love watching these videos.

Animal Magnetism: Also a Runescape Quest.

Hello SciShow, any chance you could do an episode on the 5 main senses? Maybe a simple explanation of each; how we can smell, taste, how we can see hear or feel. Thanks, I hope you read this :)

I know exactly what you mean. I really only feel "comfortable" sleeping with my head facing north. My head isn't pointing north, I can sense it and I feel awkward. No matter what bed I sleep in.

Appriciate the vids

looks to the right, "Oxogen is killing you", "good news and drinking pigs", "dark energy cameras" dammit sci show! who do you have to be so good at naming things! I cant decidide where to go next!

could you do an episode on the three types of energy and try to include convection and conduction for my science class please?

I just want to say, that for a few different reasons there are people out there with synthetic "magnetoreception" of a type. Small magnets under the finger tips. It's been done, and all these people report being exposed to an entirely new world. You should really do a follow up segment on this! :D

The reversal of the poles would be a cool video

I'm not really educated on the subject, but when you squint your eyes your eyes vibrate a tiny amount and since your eyes are squinted, the light will then be received on different locations in the back of your eye. And that's what creates the "shadows" of your veins, you actually see these at all the time, but your mind decides to ignore the information since they are always there(the way you don't really see your nose all the time, the brain decides to ignore it). The swirlies I don't know.:)

Awesome episode! Has anyone ever suggested that you break down marijuana our "prohibition"? The practical uses of cannabis and its historical relevancy...

In Western usage, anime usually refers to Japanese animation. Avatar is not Japanese. And either way, most anime are still cartoons, as "cartoon" refers to (and I quote from Wikipedia): "a film for the cinema, television or computer screen, featuring some kind of story or plot (even if it is a very short one), which is made using drawings". In fact, a Japanese person would use the word "anime" (アニメ) to refer to e.g. Disney films.

I can't remember what tribe it was or what episode of QI I heard it on, but the tribe is always able to tell which way is North because their language doesn't have right or left, but North, South, East, and West. In this way, the refer to their limbs based on the cardinal directions from their center. Disorientation can occur, but it is generally rare.

I don't know if this is somehow related to this, but whenever i stare into a clear blue sky, i see waves of a dark purplish hue. Doesn't really happen any other time, but it is frequent since living in Southern California can have plenty of clear sunny days.

Can we get an video update on the new research on this

can you do an episode on music and how songs get stuck in our heads thx hank and scishow cast

They are. If he's talking about what I think, these animals can have entangled electrons separated by a tiny distance in their eyes, and these electrons would "feel" the magnetic field differently, thus allowing them to "see" the magnetic field. This is an awesome feat, since entanglement in lab is only seen with near 0K temperatures, still they think this is the case because of the sensibility of the animals to small magnetic fields: wired.com/wiredscience/2011/01/quantum-birds/

Scishow is really headed in... the right direction

Do a Scishow on Mirror Neurons. I believe this channel could use some Psychology episodes!

A video on the Wow! Signal would be extremely interesting :P

Currently studying it. This is a new field.

This must be how Tom always knows which way to go without a compass.

There is also the issue of the movement of the magnetic poles. How do the species who use magnetic fields take that into account? Or are the changes so slow that the lifespan of an animal is too short for that to be a concern? Random questions on a Friday morning . . .

When he implied that humans could be included in a list of animals able to see magnetic fields I actually looked up to try and see one.

The scientists should study me. My family, including myself, have always been confused as to how I can immediately tell which way is north no matter where I am. It has made me really good at orienteering.

I've seen you around and recognize you as a high voltage/tesla coil enthusiast. I have been experimenting with altering the alignment of certain diamagnetic protein molecules in the body using ion and EM fields, and I believe that the alignment of these molecules defines human body capacitance (causes some people to retain more static than others). Theoretically anyone who works closely with RF currents like TCs can increase their capacitance. Look up Electro-Elite Innovative Technology!

This was awesome. How big is your arby's parking lot?

It's because "para"-magnetic molecules, that is ones that have "unpaired" electrons in their outer molecular orbitals (like diatomic oxygen), are able to interact with magnetic fields. It's basically how the "cathode ray" experiment discovered the existence of the electrons negative charge.

hey scishow, could you do an episode on advanced propulsion systems, like antimatter driven engines? Or a possible interstellar mission to say, the Centari star system? Pleeease.

I was wondering if you could do something on isolated languages. My anthropology teacher was telling me about how Basque is not related to any other language. How does something like that arise, and continue on through the generations?

Can you make an episode talking about all the fuzz surrounding the genetically modified corn? (monstanto and all that)

Can you explain how Sale Water Crocodiles when place on the other side of Australia to there home will go around the hole of the country instead of go down a river that goes back home, but has a dam half way down it, almost like they knew there was a dam with out seeing it?

I wonder if eye site correlates to a sense of direction. Not due to lack of a ideal concave shape of the cornea, but the lack of information received from the optic nerve. Such as people with ambliopia or lazy eye. That would be the first experiment I would try first if I could to determine if we have this hidden ability.

Well, If you think about it Human head are really the only kind of head that is really horizontal for any lengthy period of time. Perhaps we grew out of the need for magnetic field vision, because we spend long hours in a position where that might become troubling.

I laughed too much at the "feeling around" joke hahaha

Interesting video! This is an invitation to see an artist theory on the physics of light and time! This theory is based on just two postulates 1. Is that the quantum wave particle function Ψ or probability function represents the forward passage of time itself 2. Is that Heisenberg’s Uncertainty Principle ∆×∆p×≥h/4π that is formed by the w-function is the same uncertainty we have with any future event within our own ref-frame that we can interact with turning the possible into the actual!

How about the magnetic belts? (google for magnetic belt vibration) - they're just belts that all the vibrate a bit to the direction of north. There's quite a few tests for first activating peoples sense of north and then taking the belts away and seeing if it sticks. Could scishow look into that?

I have that same shirt Hank!

This explains it no matter that I can allways point north no matter were I am.

Could you do an episode on morphic fields?

Hank please do an episode about The Scientific Method!!!!!

On a tangent, Hank, please ask your optician about an anti-reflective treatment on some new lenses... Hmmm, speaking of which, can you do an episode on the anti-reflective treatment process for all us optical geeks?

I am one of those people who know where to go even if they don't know where they are, I'm glad to know there's (possibly) a scientific reason behind it.

its crazy how we still cant explain something as simple as how birds fly south for the winter

Long ago, everybody assumed that birds navigated like ancient mariners. But everything changed when the Fire Nation attacked.

It wasn't mentioned in the video but researchers basicly discovered another sense. How have i heard nothing of this untill now?!

Don't spare us the details, Hank, this is SciShow! :D