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Tim Urban Profile
Tim Urban

@waitbutwhy

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Writer, infant

Joined March 2013
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@waitbutwhy
Tim Urban
1 year
My book What's Our Problem? is now available. The book introduces a new framework for thinking about our chaotic political environment. With 303 drawings, it's a toolbox for understanding our societies, our group dynamics, and our own minds. Get it here:
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Tim Urban
1 year
In case Twitter is making you anxious, hereโ€™s a man making a traditional teapot. [tiktok: zishacraftsman]
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Tim Urban
2 years
Population density thread because you and I both know you have nothing better to do. Let's start with this cool way to visualize population density, by @undertheraedar . The height of each spike displays the population density in that location.
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Tim Urban
3 years
We think a lot about those black lines, forgetting that itโ€™s all still in our hands.
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@waitbutwhy
Tim Urban
2 years
Everything we call civilization was invented in the last 500 generationsโ€”way too short a time for our bodies and brains to re-optimize. We're a bunch of primates in a totally unnatural environment, trying our best. Good thing to keep in mind!
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Tim Urban
2 years
Imagine what ancient people thought when something like this happened
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Tim Urban
2 years
โ€œIf you only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.โ€ Montesquieu said this 300 years ago. Weโ€™re still working on this one.
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Tim Urban
2 years
21 thoughts from 2021 I'd like to take into 2022:
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Tim Urban
2 years
Pro tip: When you wake up in the middle of the night, the worst way to fall back asleep is to open Twitter
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@waitbutwhy
Tim Urban
2 years
It's super important to support marginalized people in places where it's popular to do so
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Tim Urban
1 year
New year, new you
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Tim Urban
3 years
Good job everyone
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Tim Urban
4 years
If Andromeda were brighter, this is how big it would be in our night sky.
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@waitbutwhy
Tim Urban
2 years
I keep thinking about this today
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@waitbutwhy
Tim Urban
2 years
Whatโ€™s the craziest conspiracy theory you think might be true?
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@waitbutwhy
Tim Urban
3 years
Feed a man a fish, feed him for a night. Teach a man to fish, feed him for a lifetime. Teach a man to make AI, the AI does all the fishing and everyone is fed forever. Then the AI accidentally kills all the people and the fish win.
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@waitbutwhy
Tim Urban
9 months
Relationship tip: when your partner makes an awful but innocent mistake (leaves their phone in the cab, forgets their passport when heading to the airport for an international flight, drops and shatters a beloved item, gets in a fender bender, etc.), don't get mad at them. Itโ€ฆ
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@waitbutwhy
Tim Urban
2 years
At the center of our planet is a solid sphere of iron & nickel the size of India (1,500mi across) that's as hot as the surface of the sun, and its interaction w the molten iron surrounding it generates the magnetic field that keeps our atmosphere from blowing away. pic: phys-org
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Tim Urban
2 years
Five cities, then and now. Somewhere today there's a quiet fishing village that will be a 2100 megalopolis. Hong Kong: 1964 | 2016
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@waitbutwhy
Tim Urban
2 years
Hidreley Diao uses AI to capture what historical figures would look like if they were modern people. George Washington:
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Tim Urban
25 days
In 2017, I did something dumb. There was a total solar eclipse passing through the US, but I was in NY, far from the path. Was I really gonna get on a plane to see a cool thing for two minutes? Nah. I had shit to do. The day came. I put my stupid glasses on and saw the sunโ€ฆ
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@waitbutwhy
Tim Urban
2 years
Nintendo (founded 1889) and the Ottoman Empire coexisted (fell in 1922) for 33 years.
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@waitbutwhy
Tim Urban
2 years
Some mantras for political thinking: Truth is hard. Humility is hard. Independent thinking is hard. Resisting tribalism is hard. Over and over, you will forget that these things are hard, and that's probably when you'll fail at them. 1/5
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@waitbutwhy
Tim Urban
3 years
The cumulative solar arrays that would power the world. Kinda weird that we haven't just done this yet. Image credit: @poweredbyart
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@waitbutwhy
Tim Urban
2 years
Enough is enough with early riser privilege
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Tim Urban
3 years
It's crazy that with an iPhone, a little Starlink antenna, and a solar power unit, you could live in an isolated cave in the mountains (or on a raft in the middle of the Pacific) and get a world-class education, start a business or art career, & make friends all around the world.
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@waitbutwhy
Tim Urban
1 year
One of the most incredible examples of a country changing its mind on an issue. Without free speech, the incredibly unpopular 1958 viewpoint that said "there's nothing wrong with interracial marriage" would never have seen the light of day.
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@waitbutwhy
Tim Urban
2 years
I graduated high school thinking I hated history, only to later realize it was my favorite thing. Good teaching should ignite curiosity.
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@waitbutwhy
Tim Urban
2 years
Today, Elon tweeted this diagram by @SwipeWright , which sums up how a lot of people (including me) feel. Then a bunch of ppl responded w/ graphs showing that Republican politicians have moved farther right in that time than Dems have moved left. Here's what I think is happening:
@elonmusk
Elon Musk
2 years
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@waitbutwhy
Tim Urban
2 years
We should probably start having more kids
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Tim Urban
4 months
New year, new you
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Tim Urban
3 years
Monthly reminder about that big green tree
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@waitbutwhy
Tim Urban
2 years
Youโ€™d have to compress Earth to this size (9 mm) to form a black hole. Youโ€™d have to compress the sun to 3 km and the moon to 0.1 mm (width of a human hair) to turn them into black holes. For every black hole out there, something THAT intense has happened. Image: @lpfproject
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@waitbutwhy
Tim Urban
1 year
22 tweets from 2022 that might blow your mind: Let's start with what a water droplet looks like at 6,000fps. [nac Image Technology]
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Tim Urban
2 years
I hope Japan actually does this
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Tim Urban
2 years
Email from Steve Jobs to himself, September 2010.
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Tim Urban
2 years
Monthly reminder to go hug someone
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@waitbutwhy
Tim Urban
1 year
My friend concisely sums up the last two months
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@waitbutwhy
Tim Urban
2 years
Needle and thread under a microscope
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@waitbutwhy
Tim Urban
2 years
A 5 megabyte hard drive in 1956 vs. 1 terabyte today. A terabyte hard drive in 1956 would be the size of a 40-story building.
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Tim Urban
1 year
30 years ago everyone left home without a phone every day. Just their wallet, keys, and thoughts. So weird.
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Tim Urban
13 days
Incredible display of zealot's corner
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@waitbutwhy
Tim Urban
1 year
22 thoughts from 2022 I'd like to take into 2023:
@waitbutwhy
Tim Urban
2 years
Everything we call civilization was invented in the last 500 generationsโ€”way too short a time for our bodies and brains to re-optimize. We're a bunch of primates in a totally unnatural environment, trying our best. Good thing to keep in mind!
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Tim Urban
1 year
Once you die you no longer experience the passage of time, so itโ€™s as if eternity passes in an instant. As far as youโ€™re concerned, the moment you die the universe reaches its final heat death state. So make the very most of this little window of consciousnessโ€”itโ€™s all there is!
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@waitbutwhy
Tim Urban
4 years
1) If all humans stood in a circle, it would be way bigger than the moon's orbit. 2) If we all stood together as a crowd, we'd fit in NYC. 3) If we all stood stacked, we'd fit in a 1km cube. 4) If you removed the empty space in human atoms, we'd all fit in an M&M.
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Tim Urban
2 years
Whales evolved from a bizarre, vaguely whale-looking land animal called the Pakicetus that lived in Pakistan 50 million years ago.
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@waitbutwhy
Tim Urban
4 years
If you ever fantasize about having been an 1880s engineer working in Edisonโ€™s lab, apply to work at @neuralink .
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Tim Urban
3 years
Pangaea gets the last laugh.
@Rainmaker1973
Massimo
3 years
How Earth will look in 250 million years according to plate tectonics theory
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Tim Urban
2 years
No one โ€œbuilds a house.โ€ They lay one brick again and again and again and the end result is a house. A remarkable, glorious achievement is just what a long series of unremarkable, unglorious tasks looks like from far away. Procrastinators are bad at remembering this.
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Tim Urban
2 years
A little breakdown of the situation:
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Tim Urban
2 years
People in the early 1900s thought soda was healthy. People in the 1950s thought white bread was healthy. People in the 1990s thought margarine was healthy. What's something most of us think is healthy today that future people will shake their heads at?
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Tim Urban
7 years
It's finally here: the full story on Neuralink. I knew the future would be nuts but this is a whole other level.
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Tim Urban
2 years
I get sad once a week that I wasn't alive during the moon landing
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Tim Urban
1 month
Will never be able to unsee it
@TerribleMaps
Terrible Maps
1 month
And people still think Earth is flat?
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Tim Urban
2 years
If I aired a highlight reel of your most selfish life moments and most shameful thoughts, you'd seem like an awful person. If I aired a reel of your best, kindest moments, you'd seem like a saint. But people aren't highlight reels, and the unedited cut is always a messy mix!
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Tim Urban
3 years
Go hug someone
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Tim Urban
4 years
Sine is blue, cosine is red. It's such bullshit that today's students get to have the internet explain stuff instead of having to figure it out yourself using incredibly awful textbooks.
@jagarikin
ใ˜ใ‚ƒใŒใ‚Šใใ‚“
7 years
๏ฝžใ‚ตใ‚คใƒณใจใ‚ณใ‚ตใ‚คใƒณใฏไฝ็›ธใฎๅทฎใŒ90ๅบฆใฎๅ›ณ๏ฝž
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Tim Urban
2 years
The James Webb mirror is a 6.5m/21ft beast. It can also see infrared light way better than Hubble, which will reveal galaxies so far away theyโ€™re redshifted beyond the visible spectrum. Itโ€™ll show us the first stars and formation of the first galaxies - our best time machine yet.
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Tim Urban
2 years
What's up with boys and school? Source:
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Tim Urban
4 months
Important lesson for young people: After childhood, there's no one to protect you from your own decisions. No one will stop you from getting yourself into a bad marriage, a job you hate, a mountain of debt, trouble with the law. You are the sole architect of your life path.
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Tim Urban
4 years
I'm just gonna start posting this during every major wave of current events.
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Tim Urban
2 years
Your family is weird [credit: ]
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Tim Urban
2 years
What country has the best candy?
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Tim Urban
1 year
2100s people will think itโ€™s so weird that humans used to get pregnant like other mammals.
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Tim Urban
2 years
It seems impossible at the beginning of this video that the person filming might be in danger
@EverestToday
Everest Today
2 years
Check out this incredible avalanche footage from the Tian Shan mountains in Kyrgyzstan. Luckily, everyone survived. Account:
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Tim Urban
4 years
Everything we call civilization was invented in the last 500 generationsโ€”way too short a time for our bodies and brains to re-optimize. We're a bunch of forest primates in a totally unnatural environment, trying our little best. Someone needs to give our species a hug.
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Tim Urban
3 years
When youโ€™re the boss of the ideas in your head, youโ€™re always willing to revise them. When thereโ€™s no amount of evidence that will change your mind about something, it means that idea is your boss. Humility is the awareness that no idea is worthy of being your boss.
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Tim Urban
2 years
When the Aztec Empire was founded, the University of Oxford was already an ancient, centuries old institution.
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Tim Urban
3 years
It sucks jumping in a cold pool but once youโ€™re in itโ€™s fine. Same pattern applies to: -Getting started with work each day -Having a hard conversation with a friend -Singing in front of people -Breaking up with someone Most of the time, jumping in is the hardest part.
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Tim Urban
3 years
The trademark merry-go-round of human societies. Kinda worried we're somewhere on the right side...
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Tim Urban
8 months
Phones are an unusual example of societal equality. Incredibly rich people have cars, houses, planes, vacations, jewelry, clothing, furniture, food, wine, stadium seats, and services that other people couldn't dream of having. But they have the same smartphone everyone else has.
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Tim Urban
2 years
Whatโ€™s something youโ€™ve changed your mind about?
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Tim Urban
2 years
There are people alive today who were around when we still thought the Milky Way was the entire universe
@Qupeplex
George Ioannidis
2 years
Cute sections from the astronomy section of Popular science monthly in 1902 talking about the Andromeda Nebula and the Spiral Nebula of Canes Venatici because it hadn't clicked yet they were different galaxies. #Space #Astronomy
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Tim Urban
4 years
A tiny section of our galactic center. 10 million stars. Where is everybody?
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Tim Urban
4 years
The thing I understand least is how there are incredibly thorough Wikipedia pages for literally everything.
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Tim Urban
1 year
A tribe of 100 people gained 100 years of life experience every year. A city of 10,000 gained the same in 3 days. Today, our species lives 15,000 years every minute and almost a million years every hour. Tiny improvements in how we communicate can pay massive wisdom dividends.
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Tim Urban
2 years
My body hates watching this [ @trevorjacob93 ]
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@waitbutwhy
Tim Urban
2 years
So even though the left hasn't moved that far left (as is shown by voting results), the left is in a sense being held hostage by their extreme wing, making a lot of people who enthusiastically voted for Obama feel politically homeless today.
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Tim Urban
2 years
Have you experienced deja vu?
Yes, often
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Yes, occasionally
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Never
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Tim Urban
2 years
Using a modern 80-year lifetime as a unit, only 150 lifetimes ago, the Americas were untouched by people. The first human set foot in Europe only 500 lifetimes ago. 1,200 lifetimes ago we only lived in Africa. Humans are so new. [image: ]
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Tim Urban
1 year
finally
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Tim Urban
4 years
The path of a maturing thinker. In order to get to Grown-Up Mountain and start real learning, you have to brave the cold winds of Insecure Canyon. If you're not willing to say "I don't know" for a while, you might spend your whole life on Childโ€™s Hill.
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Tim Urban
2 years
Much scarier than the small number of evil people is the large number who will fall in line with whatever's fashionable. When kindness is in fashion, they're kind. When a form of bigotry becomes cool, they jump on board. When it's popular to condone violence, they're all for it.
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Tim Urban
2 years
Youโ€™re not a progressive or a conservative or a moderate or radical or other political noun. Youโ€™re also not progressive or conservative or any other political adjective. Those are words for ideas, not people. Your mind is way too rad to be locked in a noun or adjective prison.
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Tim Urban
1 year
It took 300,000 years to get to 1 billion but only 218 years to go from 1 to 8.
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Tim Urban
1 year
I took the weekend off Twitter and suddenly remembered that the sky is blue and the grass is soft and the flowers smell nice. Today, I'm just sitting here refreshing this page.
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Tim Urban
2 years
It takes a googol years for a supermassive black hole to decay. How long is that? If you had an hourglass w/ a grain of sand for every particle in the universe, and 1 grain fell every 10 billion years, when it ran out youโ€™d be < 1% thru the black holeโ€™s life. h/t @Kurz_Gesagt
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Tim Urban
3 years
If we took all the gold that has ever been mined and melted it into a big cube, it would be this big.
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Tim Urban
4 years
Thoughts from a surgeon friend. Sharing with his permission.
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Tim Urban
1 year
@elonmusk I thought we agreed you were not going to talk about this publicly
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Tim Urban
2 years
Itโ€™s funny that after the Big Bang, there were all these hydrogen atoms everywhere and 13.8 billion years later some of them have turned into majestic nebulas and others have turned into Cheez-Its.
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Tim Urban
1 year
I read like 75 books in English classes throughout my childhood and I disliked almost all of them. Not because they were bad books but because English class ruins books. School sucks so much more than it has to.
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Tim Urban
2 years
Our brains come preset to look at life up close. Don't forget to zoom out.
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Tim Urban
2 years
In 2009, the Institute for Highway Safety staged a head on crash between a 2009 Chevy Malibu and a 1959 Bel Air. The same crash that would have instantly killed someone in 1959 causes a few light injuries today.
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Tim Urban
3 years
When parents raise a child, they install elements of their psyche in them. When one of those elements is damaged, the damage is usually passed on. So self-improvement isn't selfishโ€”it's repairing the "family psyche," which improves the lives of all the generations downstream.
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Tim Urban
4 years
Ridiculously cool close-ups of the surface of the sun just released by @NSF . Each of those cells is the size of Texas. (h/t @kottke )
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Tim Urban
2 years
Seems relevant these days
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Tim Urban
1 year
Whenever I get to know someone who seems perfect, I end up disappointed. Whenever I get to know someone who I think is the worst of the worst, I'm pleasantly surprised. Angels and demons aren't real.
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Tim Urban
1 year
I appreciate you all having read my posts during this final era when people still read stuff by human writers
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Tim Urban
2 years
Hot tip: if you're pregnant, stick with the ultrasound. PASS ON THE MRI. [via Dan Martin on Quora]
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