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SciShow

1 month

SciShow never shies away from complexity, but we can’t pack all of the amazing science behind a subject into every 10-minute video we create. That’s why we wanted to try something a little different... 🧵

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Last Seen Profiles

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SciShow

@SciShow

2 months

Never throw potassium sulfate at someone. That's considered a salt.

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SciShow

@SciShow

4 years

Here's some wildness...there are two types of twins...dizygotic (two zygotes, thus fraternal) and monozygotic (one zygote splits, thus identical). Except NOPE! You've been lied to.

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SciShow

@SciShow

4 years

Everywhere on earth where there is water, there is life. There are bacteria that thrive in boiling hot water with the pH of battery acid. Water is the stuff of life and life has found a way to live in it...everywhere on Earth. EXCEPT. There's always an except.

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SciShow

@SciShow

2 months

Trichiasis, where eyelashes begin growing toward the eye, can be very difficult to treat without modern medicine and has been the cause of millions of cases of blindness!

Hank Green

@hankgreen

2 months

Very excited for my doctor’s appt today where a plastic surgeon will tell me whether he can fix the eyelash that just started randomly growing on the inside of my eyelid☺️

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2 months

...but because we don't the thought is that there is an advantage for a human in having other humans know what they are looking at. The theory is that we are so weirdly social that there is more benefit in automatically sharing what you're looking at than hiding it.

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SciShow

@SciShow

4 years

As we get deeper into efforts to expand testing, the difference between different kinds of tests is going to get more complex. So let's talk about the four main types of COVID-19 tests, and how they each work. (a long thread)

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SciShow

@SciShow

4 years

(THREAD) How on earth does hydroxychloroquine treat diseases as different as malaria parasites, lupus, and potentially COVID-19? Well, it's actually not /that/ complicated. You just have to understand the chemistry a bit.

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SciShow

@SciShow

3 years

We’re excited to announce that we’re updating our look! Starting July 1st, we’ll be sporting a new logo and intro sequence. But don’t worry, we’re still making the same fun, curiosity-inspiring content you can always count on us for!

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SciShow

@SciShow

6 years

THANK YOU!!!!! We absolutely love making these videos, and we love having all of you in this amazing community! 🚀✨

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SciShow

@SciShow

2 months

SciShow Comment: Why do our eyes have a lot of white in them? Most animals have the iris/cornea/pupil that is the size of the whole eye socket.

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SciShow

@SciShow

2 months

SciShow Answer: This is one of the weirdest things about humans that we don't realize is weird. Most animals (including other primates) have dark or hidden scleras because it's better for them to hide what they're looking at....

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SciShow

@SciShow

5 years

Just a normal SciShow Quiz Show shoot with @DrJoeHanson and @hankgreen . Nothing uncanny about this at all.

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SciShow

@SciShow

3 years

Do you enjoy writing about science? Are you able to easily communicate complex science concepts in ways that are engaging to large audiences? Then you might be interested in working with us as a SciShow Staff Writer! Deadline to apply is April 20th.

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SciShow

@SciShow

4 years

There are a BUNCH of subsets of these, mirror-image twins, conjoined twins, fetus in fetu twins. There are also dizygotic chimeric twins where there is only one embryo but it contains the DNA of TWO PEOPLE WHAT WHAT WHAT?!?!?

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SciShow

@SciShow

7 years

SciShow will be at both the national March for Science, and at our local one in Montana. Local + National. Hopefully global when we add you.

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SciShow

@SciShow

4 years

But then there are entire different categories. There's sesquizygotic twins. Fraternal twins share 50% of their DNA, like any sibling. Identical twins share 100%. Sesquizygotic twins share some amount BETWEEN those two. And no one knows hOW. And it's only been documented TWICE.

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SciShow

@SciShow

2 months

Please, oh, please always send us any questionable science takes you see on the internet. Sometimes they are real! And that's amazing! Sometimes they are...not. And then, well, then we've gotta do what we've gotta do...

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SciShow

@SciShow

4 years

Superfetation is when a parent is pregnant not with twins, but with siblings. But then they are, of course, born at the same time, so they're just SIBLINGS WITH THE SAME BIRTHDAY.

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SciShow

@SciShow

6 years

HEY IT'S A REALLY GOOD TIME TO SUBSCRIBE TO SCISHOW SPACE 🚀🌠🌕🌟

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SciShow

@SciShow

5 years

Today's SciShow Quiz Show features @DrJoeHanson against @hankgreen , and the theme is doppelgӓngers... for no particular reason.

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SciShow

@SciShow

4 years

And then there's a kind of twin that isn't even really a twin...superfetation is when a person becomes pregnant WHILE THEY'RE PREGNANT. A chance accidntal ovulation is also fertilized, resulting in one embryo that is a month (usually) younger than the other.

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SciShow

@SciShow

4 years

Anyway, we made a video about all of this if you want to know more. Check it!

6 Types of Twins That Are Extremely Rare

Did you know there are more types of twin than just identical or fraternal? There are actually 6 types of twins that are extremely rare, and can teach us a l...

www.youtube.com

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SciShow

@SciShow

3 years

So while humans evolved to have big butts, other animals developed offensive and defensive derrieres - which seems way more useful.

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SciShow

@SciShow

4 years

The salt sucks water out of the cells, the heat denatures proteins, the and acid rips them apart. There is simply nothing living in those pools. Water without life is so bizarre we've only ever found it ONCE on our planet.

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SciShow

@SciShow

6 years

Please Hank we're professionals 🍌🍌🍌

Hank Green

@hankgreen

6 years

God bless the SciShow staff figuring out ways to make thumbnails for things like this.

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SciShow

@SciShow

2 months

Ridiculously good SciShow comment of the Day! The video: There are a bunch of weird and amazing physics reasons why radioactive elements usually eventually decay into lead. The Comment:

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SciShow

@SciShow

10 years

We filmed a super fun sibling face-off episode of Quiz Show last week! @realjohngreen @hankgreen http://t.co/wqCWK8cvWa

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SciShow

@SciShow

7 years

If you walk into a room and have no idea why you're there, it's not because you're losing it.

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SciShow

@SciShow

5 years

With the 50th anniversary of the Apollo 11 moon landing this month, we decided to ask a bold question. Get ready for SciShow's first documentary style video, coming July 17th 🌕

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SciShow

@SciShow

1 year

When a meteorite makes a crash landing, there's no telling what angle it will land at or how fast it will be going, so why do a majority of craters look the same?

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SciShow

@SciShow

7 years

This was absolutely unanimously agreed upon by the entire office and we are not sorry

Hank Green

@hankgreen

7 years

. @SciShow ...which one of you did this?

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SciShow

@SciShow

4 years

There is one. single. wet. place. on. Earth. where there is no life. Not deep under the surface, not in molten asphalt, not in million year-old lakes under glaciers, but on top of a volcano in the Dallol Geothermic Field in Ethiopia.

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SciShow

@SciShow

6 years

“Remember to look up at the stars and not down at your feet." —Stephen Hawking Remembering an extraordinary physicist today.

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SciShow

@SciShow

9 years

We're looking to hire a few freelance SciShow News writers! Got what it takes? http://t.co/nWfWTh4unn http://t.co/lssZkMynHK

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SciShow

@SciShow

4 years

Hi all! The SciShow team has agreed that our role right now is to support and not distract from the conversation around police brutality and the Black Lives Matter movement.

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SciShow

@SciShow

3 years

Animals have clued scientists into all sorts of remedies over the years: Frogs taught us about antibiotics, spider venom led to stroke treatment, even roadkill is inspiring medicine!

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SciShow

@SciShow

2 years

History is being made this week as @NASAWebb releases several long-awaited images from the James Webb Space Telescope. Join us in a deep dive into these stunning images in a special episode you don't want to miss. Watch it now at

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SciShow

@SciShow

4 years

The good news is, even if it is entirely dead, Dallol is BEAUTIFUL. And there's more to know...here's our video about it.

The Only Water on Earth Without Life

When it comes to water on Earth, life finds a way. Even in the hottest, most acidic, and saltiest waters in the world, odds are you'll find some kind of orga...

www.youtube.com

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@SciShow

3 years

We often think of the ocean as a pretty serene, lovely place to relax, but some unexpected animals are causing quite a racket under the waves!

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SciShow

@SciShow

7 years

Impromptu SciShow meet-up!

Katie Stelling

@forceofnature

7 years

I found another awesome human wearing a @SciShow shirt

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SciShow

@SciShow

7 years

Curiosity was originally supposed to have a 23-month-long mission, but 5 years later, it's still going!

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SciShow

@SciShow

4 years

Makes you wonder about other places in the universe.

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SciShow

@SciShow

4 years

Now, the chemistry life depends on...CANNOT happen without water. And life has evolved to handle extremely salty water, or extremely hot water, or extremely acidic water. But Dallol is ALL of those.

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SciShow

@SciShow

6 years

Happy birthday, George Washington! We're sorry 18th-century medicine failed you so tragically.

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SciShow

@SciShow

2 years

You're on! 😈

SciShow Space

@SciShowSpace

2 years

How about whoever has the most calendar sales by November 4th wins?

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SciShow

@SciShow

19 days

😍😍😍

📸Trevor Mahlmann🚀

@TrevorMahlmann

19 days

I got my camera, set up the tripod, dialed the lens to 70mm & framed it up on a static portion of the sky to capture the 2024 Solar Eclipse periodically for over two hours.. I am so, so proud of the compilation that resulted!🥲🌙☀️ ✍️🖼️

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4 years

We just hit 6 million subscribers! Thank you all SO MUCH!!!! 🎉🎉💚🧪🥼👩‍🔬👨‍🔬💚🎉🎉

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SciShow

@SciShow

8 years

Coming very soon!

Matt 💢✊🏼💢

@mncastens

8 years

Okay @hankgreen , will we see an @SciShow about gravitational waves?

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SciShow

@SciShow

10 years

Today we tackle the Q: "What's the #MeaningOfLife ? Our answer: to create life. What's yours? @hankgreen @johngreen

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SciShow

@SciShow

1 month

Hey! Got Any Eclipse Questions???

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SciShow

@SciShow

7 years

THANK YOU SO MUCH!!!! We can't wait to keep getting smarter with all FOUR MILLION of you!!

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SciShow

@SciShow

3 years

In fact, all the SciShow channels are getting a makeover! Check out all the new SciShow banners!

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SciShow

@SciShow

6 years

Happy #NationalSmileDay ! If you want to know why @michaelaranda falling with ping pong balls is hilarious, check out our video about why we laugh: 🤣

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@SciShow

5 years

In the first ever SciShow Psych Talk Show, @KatiMorton joins @hankgreen to discuss how to find a therapist, toxic relationships, and more!

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SciShow

@SciShow

10 years

Look at the lungs on this guy. Thanks for stopping by @officialkennyg ! #SciShow http://t.co/eTcIfIFWoJ

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@SciShow

1 month

Tomorrow at 12 p.m. ET (UTC -4), the first SciShow Deep Dive will premiere. These will be extra-long, extra-thinky episodes that explore the most fascinating things happening in science. The first one is a look at the bizarre future of telescopes with guest host @astro_alexandra

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SciShow

@SciShow

6 years

SO excited to announce that we are launching a podcast called SciShow Tangents, in partnership with WNYC Studios! It will debut this fall, and we can't wait for you to listen!

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SciShow

@SciShow

9 years

SciShow videos with transcripts are now able to be translated! If you'd like to help out, see this tumblr post: http://t.co/QavpCqIln6

Want to help translate SciShow videos?

Exciting news! You can now translate SciShow videos directly on YouTube thanks to the site’s new Fan Captions feature. It’s really easy and simple, too. If you’re multilingual and want to help...

scishow.tumblr.com

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SciShow

@SciShow

7 months

Now introducing the SciShow Rocks Box! Sign up now at to get this month's precious gem delivered right to your door!

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SciShow

@SciShow

4 years

GO SAFELY MY FRIEND

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@SciShow

1 year

Happy Thanksgiving to our US-based viewers! Here's a mini playlist of some of our best videos on giving thanks and eating food.

Thanksgiving 2022

www.youtube.com

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@SciShow

4 years

Hi! If you've got kids at home these days, we wanted to stop by and recommend @SciShowKids . It's great for elementary schoolers, and you can find some of our favorite videos here: .

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SciShow

@SciShow

10 years

Keep your eyes peeled in the next while for some very exciting SciShow-ness in the real world :)

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SciShow

@SciShow

1 month

Understand the Whole Future of Telescopes in 10x3 Minutes:

Hank Green

@hankgreen

1 month

Understand the Whole Future of Telescopes in 10 Minutes:

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@SciShow

11 days

We're celebrating 10 years of Reid hosting on SciShow! Congratulations Reid!

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4 years

We've seen that hydroxychloroquine can help cells in vitro, and it has been shown to help in other coronaviruses. So is it useful now?? Maaaybe? And also...it depends? But that's a conversation for the full video:

Hydroxychloroquine and COVID-19: What We Know Right Now | SciShow News

You might have heard that we found a cure for the COVID-19, and that it comes from a drug we've used for centuries. But let's take a breath and look at the f...

www.youtube.com

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@SciShow

3 years

Even @SciShowTangents is getting an upgrade! Our podcast logo will be featuring a new design starting July 1st.

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@SciShow

4 years

We partnered with @MontereyAq to bring you a video about the microscopic organisms with the power to reshape the planet’s atmosphere: phytoplankton. Watch the full video on YouTube to learn why they’re so important to life on Earth:

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@SciShow

3 years

A year ago, mathematician and NASA legend Katherine Johnson passed away at the age of 101. She was a key member of the missions that sent the first Americans into space, then into orbit, and finally to the moon.

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@SciShow

10 years

If YOU have a question you most want answered, tweet it w/ the hashtag #WMAQ & we'll answer a bunch in a new video at the end of the month.

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SciShow

@SciShow

6 years

SciShow is looking for freelance writers! Want to write for SciShow or any of our spin-off channels? Apply by September 12!

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@SciShow

7 years

Hank and our Editor in Chief, Blake, at the Missoula #marchforscience

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@SciShow

5 years

The water crisis in Flint, Michigan is a prime example of science being ignored, unknown, or misused.

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@SciShow

2 years

In this special episode, we look at some ancient fish ancestors to answer a notable question: Is a beaver a fish? You may be surprised by the o-fish-al result. Thanks to our friends at @MontereyAq for helping us out with this one! 📺 full episode:

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@SciShow

4 years

Scientists don't really talk about a single cure for cancer, because cancer is a lot of different things. EXCEPT! We may have just found the key to a universal treatment... by accident.

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@SciShow

1 month

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9 years

1. Astronaut pee 2. Science 3. ????? 4. PROFIT! (or: PLASTIC!) http://t.co/N5kSbQEY3P

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SciShow

@SciShow

4 years

Despite what we might have learned in high school biology, there are more than two human sexes.

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SciShow

@SciShow

4 years

Starting today, we’ll also be using our social media to highlight posts by Black creators and scientists. We want to use some of the power of the SciShow community to support amazing Black communicators, educators, and creators.

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SciShow

@SciShow

7 years

SciShow is hiring an editor/writer! Want to join our team? Apply by June 19th! Details here:

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@SciShow

29 days

We know how much you love the SciShow Rocks Box, now you can show your rocks how much you love them too.

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@SciShow

8 years

Augmented reality isn’t just science fiction anymore!

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@SciShow

6 years

Do you love science and want to own items that get you excited about the universe? So do we! That's why we started , where you can browse through things the SciShow team thinks are super rad.

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@SciShow

6 years

We probably don't need to tell you not to eat Tide Pods (omg don't eat Tide Pods), but why are people doing this in the first place?

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@SciShow

5 years

A lot of health research is done in mice, but with one important note: Mice aren't people.

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@SciShow

4 years

Now you might be thinking, "Jeez, dampening the immune system of a person with a deadly virus sounds...bad?" But actually the inflammatory immune response to dying lung tissue during a COVID-19 case sometimes destroys even more lung tissue than the disease itself.

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SciShow

@SciShow

9 years

YES, twitter, yes! We are working on a video about The Dress. Soon!

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@SciShow

8 years

. @hankgreen explains what the detection of gravitational waves means for the future and why it's such a huge deal!

Why Gravitational Waves Are a Big Deal

Last week, it was announced that we've detected gravitational waves on Earth. Now, Hank explains what that means for the future and why it's such a huge deal...

www.youtube.com

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4 years

Hydroxychloroquine has two things going for it (well, three really, but we'll get there.) First, it's /really/ good at moving across cell membranes because of it's lipid solubility. Second, it's a weak base, meaning it can snag up protons from acidic places.

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@SciShow

10 years

Woooo! RT @RobbyKraft : @SciShow trainspotting in NYC http://t.co/79G2pQyfcy

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8 years

We just uploaded our 1000th video! It's about making babies...

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7 years

Coming soon, SciShow doomsday preppers! (Seriously though, always have at least three gallons of water per person on hand).

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@SciShow

6 months

12 years ago today we created the SciShow YouTube channel! Thank you for learning with us all this time!

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6 years

We get a lot of strange/interesting questions at SciShow, but Hank's are on their own level.

Hank Green

@hankgreen

6 years

I have the best job in the world. @SciShow

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6 years

What happened to our penis bones??

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4 years

One acidic place? The guts of the parasite that causes malaria. It accumulates there and prevents the parasite's gut from doing the things it needs to do to survive, and the parasite dies.

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7 years

Some genetic mutations give people seemingly superhuman abilities!