Erica Klarreich
@ericaklarreich.bsky.social
Mathematics and science journalist. My work has appeared in Quanta, Nature, The Atlantic, New Scientist, Science News and other publications.
Reposted by Erica Klarreich
I always enjoy @ericaklarreich.bsky.social’s math pieces. This is what a Noperthedron looks like:
October 24, 2025 at 6:48 PM
I always enjoy @ericaklarreich.bsky.social’s math pieces. This is what a Noperthedron looks like:
Reposted by Erica Klarreich
In August, two mathematicians found a shape that puts an end to a centuries-old geometric mystery. @ericaklarreich.bsky.social reports: www.quantamagazine.org/first-shape-...
First Shape Found That Can’t Pass Through Itself | Quanta Magazine
After more than three centuries, a geometry problem that originated with a royal bet has been solved.
www.quantamagazine.org
October 24, 2025 at 2:30 PM
In August, two mathematicians found a shape that puts an end to a centuries-old geometric mystery. @ericaklarreich.bsky.social reports: www.quantamagazine.org/first-shape-...
My latest for @quantamagazine.bsky.social is about a geometry problem devised more than three centuries ago by King Charles I's nephew, Prince Rupert of the Rhine, leader of the Royalist forces in the English Civil War.
www.quantamagazine.org/first-shape-...
www.quantamagazine.org/first-shape-...
First Shape Found That Can’t Pass Through Itself | Quanta Magazine
After more than three centuries, a geometry problem that originated with a royal bet has been solved.
www.quantamagazine.org
October 24, 2025 at 5:38 PM
My latest for @quantamagazine.bsky.social is about a geometry problem devised more than three centuries ago by King Charles I's nephew, Prince Rupert of the Rhine, leader of the Royalist forces in the English Civil War.
www.quantamagazine.org/first-shape-...
www.quantamagazine.org/first-shape-...
A new paper has forced a reckoning on cryptographers by showing how to harness a widely used proof technique to "prove" lies -- my latest for @quantamagazine.bsky.social www.quantamagazine.org/computer-sci...
Computer Scientists Figure Out How To Prove Lies | Quanta Magazine
An attack on a fundamental proof technique reveals a glaring security issue for blockchains and other digital encryption schemes.
www.quantamagazine.org
July 9, 2025 at 10:56 PM
A new paper has forced a reckoning on cryptographers by showing how to harness a widely used proof technique to "prove" lies -- my latest for @quantamagazine.bsky.social www.quantamagazine.org/computer-sci...
Reposted by Erica Klarreich
An attack on a fundamental proof technique reveals a glaring security issue for blockchains and other digital encryption schemes. @ericaklarreich.bsky.social reports:
www.quantamagazine.org/computer-sci...
www.quantamagazine.org/computer-sci...
Computer Scientists Figure Out How To Prove Lies | Quanta Magazine
An attack on a fundamental proof technique reveals a glaring security issue for blockchains and other digital encryption schemes.
www.quantamagazine.org
July 9, 2025 at 2:27 PM
An attack on a fundamental proof technique reveals a glaring security issue for blockchains and other digital encryption schemes. @ericaklarreich.bsky.social reports:
www.quantamagazine.org/computer-sci...
www.quantamagazine.org/computer-sci...
Reposted by Erica Klarreich
Dear #mathsky, if you repost this, it will let people see the article for free. Thanks!
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
How Bees, Beer Cans and Data Solve the Same Packing Problem (Gift Article)
Trying to fit it all in? There’s a trick to it, even in 24 dimensions.
www.nytimes.com
June 23, 2025 at 10:53 AM
Dear #mathsky, if you repost this, it will let people see the article for free. Thanks!
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
Some dimensions are weirder than others! In a new proof, mathematicians have shown that a certain kind of strangely twisted shape can exist only in dimensions 2, 6, 14, 30, 62 and 126. My latest for Quanta Magazine: www.quantamagazine.org/dimension-12...
Dimension 126 Contains Strangely Twisted Shapes, Mathematicians Prove | Quanta Magazine
A new proof represents the culmination of a 65-year-old story about anomalous shapes in special dimensions.
www.quantamagazine.org
May 5, 2025 at 5:03 PM
Some dimensions are weirder than others! In a new proof, mathematicians have shown that a certain kind of strangely twisted shape can exist only in dimensions 2, 6, 14, 30, 62 and 126. My latest for Quanta Magazine: www.quantamagazine.org/dimension-12...
Reposted by Erica Klarreich
A new proof represents the culmination of a 65-year-old story about anomalous shapes in special dimensions. @ericaklarreich.bsky.social reports: www.quantamagazine.org/dimension-12...
Dimension 126 Contains Strangely Twisted Shapes, Mathematicians Prove | Quanta Magazine
A new proof represents the culmination of a 65-year-old story about anomalous shapes in special dimensions.
www.quantamagazine.org
May 5, 2025 at 2:12 PM
A new proof represents the culmination of a 65-year-old story about anomalous shapes in special dimensions. @ericaklarreich.bsky.social reports: www.quantamagazine.org/dimension-12...
Reposted by Erica Klarreich
Dennis Gaitsgory just won the $3 million Breakthrough Prize in mathematics; here's my deep dive from last year into his masterwork: www.quantamagazine.org/monumental-p...
Monumental Proof Settles Geometric Langlands Conjecture | Quanta Magazine
In work that has been 30 years in the making, mathematicians have proved a major part of a profound mathematical vision called the Langlands program.
www.quantamagazine.org
April 6, 2025 at 4:36 PM
Dennis Gaitsgory just won the $3 million Breakthrough Prize in mathematics; here's my deep dive from last year into his masterwork: www.quantamagazine.org/monumental-p...
Reposted by Erica Klarreich
Wrote an illustrated guide to what life was like before the Affordable Care Act. Spoiler: it was bad.
Read the whole thing here: aubreyhirsch.substack.com/p/it-could-b...
Read the whole thing here: aubreyhirsch.substack.com/p/it-could-b...
April 1, 2025 at 12:13 PM
Wrote an illustrated guide to what life was like before the Affordable Care Act. Spoiler: it was bad.
Read the whole thing here: aubreyhirsch.substack.com/p/it-could-b...
Read the whole thing here: aubreyhirsch.substack.com/p/it-could-b...
Reposted by Erica Klarreich
If you accept that non-citizens have no right to due process, you are accepting that citizens have no right to due process. All the government has to do is claim that you are not a citizen; without due process you have no chance to prove the contrary.
March 24, 2025 at 10:18 PM
If you accept that non-citizens have no right to due process, you are accepting that citizens have no right to due process. All the government has to do is claim that you are not a citizen; without due process you have no chance to prove the contrary.
Reposted by Erica Klarreich
There are days in life that shake you.
I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University
& academic career... 1/🧵
I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University
& academic career... 1/🧵
March 18, 2025 at 11:27 PM
There are days in life that shake you.
I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University
& academic career... 1/🧵
I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University
& academic career... 1/🧵
Reposted by Erica Klarreich
They're called public records for a reason. Starting today, WIRED will *stop paywalling* articles that are primarily based on public records obtained through the Freedom of Information Act, becoming the first publication to partner with @freedom.press to offer this for our new coverage.
Wired is dropping paywalls for FOIA-based reporting. Others should follow
As the administration does its best to hide public records from the public, Wired magazine is stepping up to help stem the secrecy
freedom.press
March 18, 2025 at 1:11 PM
They're called public records for a reason. Starting today, WIRED will *stop paywalling* articles that are primarily based on public records obtained through the Freedom of Information Act, becoming the first publication to partner with @freedom.press to offer this for our new coverage.
Reposted by Erica Klarreich
Slate is offering free Slate Plus access to federal employees who lose their jobs. Here's how to sign up. @slate.bsky.social has lots of relevant career advice, money advice, smart news coverage & entertaining distractions from all the chaos and cruelty. slate.com/fed-plus
If you’re a federal employee—current or recently laid off—Slate Plus is free for six months.
Thousands of federal employees are facing job cuts—or working under growing uncertainty. Slate is offering them six months of Slate Plus for free.
slate.com
March 8, 2025 at 7:24 PM
Slate is offering free Slate Plus access to federal employees who lose their jobs. Here's how to sign up. @slate.bsky.social has lots of relevant career advice, money advice, smart news coverage & entertaining distractions from all the chaos and cruelty. slate.com/fed-plus
Reposted by Erica Klarreich
On Friday, we Stand Up for Science in locations Nationwide (& internationally!) to support science as a public good that benefits everyone.
Join us! Visit www.standupforscience2025.org for more information & other ways to get involved ☀️
Join us! Visit www.standupforscience2025.org for more information & other ways to get involved ☀️
March 4, 2025 at 12:36 PM
On Friday, we Stand Up for Science in locations Nationwide (& internationally!) to support science as a public good that benefits everyone.
Join us! Visit www.standupforscience2025.org for more information & other ways to get involved ☀️
Join us! Visit www.standupforscience2025.org for more information & other ways to get involved ☀️
Reposted by Erica Klarreich
The American Mathematical Society has also started a page to coordinate support for professional mathematics, so far focusing on executive orders impacting the National Science Foundation: www.ams.org/government/g...
AMS :: Take Action
www.ams.org
February 22, 2025 at 2:59 PM
The American Mathematical Society has also started a page to coordinate support for professional mathematics, so far focusing on executive orders impacting the National Science Foundation: www.ams.org/government/g...
Reposted by Erica Klarreich
I hope this action is not forgotten. It will be a small thing in the tsunami of very bad things, but is symptomatic of so much. And I simply can't see that it is in any way the result of enforcement. This is the sort of anticipatory obedience that happens in authoritarian regimes.
It has been brought to my attention that my article has been censored to exclude certain terms:
asm.org/Articles/202...
web.archive.org/web/20250114...
#MicroSky
asm.org/Articles/202...
web.archive.org/web/20250114...
#MicroSky
February 4, 2025 at 5:46 PM
I hope this action is not forgotten. It will be a small thing in the tsunami of very bad things, but is symptomatic of so much. And I simply can't see that it is in any way the result of enforcement. This is the sort of anticipatory obedience that happens in authoritarian regimes.
Reposted by Erica Klarreich
In case you're in the mood for some good news today, I'm excited to announce @quantabooks.bsky.social, our new imprint at @simonsfoundation.org partnering with the amazing team at @fsgbooks.bsky.social. Learn more at www.quantabooks.org and send us your book queries!
January 29, 2025 at 4:52 PM
In case you're in the mood for some good news today, I'm excited to announce @quantabooks.bsky.social, our new imprint at @simonsfoundation.org partnering with the amazing team at @fsgbooks.bsky.social. Learn more at www.quantabooks.org and send us your book queries!
Reposted by Erica Klarreich
In 2017, I wrote about how the center of gravity for math and science research moved from Germany to the United States under the Nazis and how public funding of science research allowed the US to remain the center of many fields after the war. That is under threat now.
undark.org/2017/02/01/m...
undark.org/2017/02/01/m...
January 23, 2025 at 6:56 PM
In 2017, I wrote about how the center of gravity for math and science research moved from Germany to the United States under the Nazis and how public funding of science research allowed the US to remain the center of many fields after the war. That is under threat now.
undark.org/2017/02/01/m...
undark.org/2017/02/01/m...
"A proof that Riemann missed" -- my latest for @quantamagazine.bsky.social addresses an age-old question: which numbers are irrational?
www.quantamagazine.org/rational-or-...
www.quantamagazine.org/rational-or-...
Rational or Not? This Basic Math Question Took Decades to Answer. | Quanta Magazine
It’s surprisingly difficult to prove one of the most basic properties of a number: whether it can be written as a fraction. A broad new method can help settle this ancient question.
www.quantamagazine.org
January 8, 2025 at 5:09 PM
"A proof that Riemann missed" -- my latest for @quantamagazine.bsky.social addresses an age-old question: which numbers are irrational?
www.quantamagazine.org/rational-or-...
www.quantamagazine.org/rational-or-...
Hector Pasten didn't want to write an exam for his students, so he procrastinated by thinking about a nearly century-old problem about prime factors--and solved it! My latest for
@quantamagazine.bsky.social #MathSky
www.quantamagazine.org/big-advance-...
@quantamagazine.bsky.social #MathSky
www.quantamagazine.org/big-advance-...
Big Advance on Simple-Sounding Math Problem Was a Century in the Making | Quanta Magazine
A new proof about prime numbers illuminates the subtle relationship between addition and multiplication — and raises hopes for progress on the famous abc conjecture.
www.quantamagazine.org
October 14, 2024 at 6:45 PM
Hector Pasten didn't want to write an exam for his students, so he procrastinated by thinking about a nearly century-old problem about prime factors--and solved it! My latest for
@quantamagazine.bsky.social #MathSky
www.quantamagazine.org/big-advance-...
@quantamagazine.bsky.social #MathSky
www.quantamagazine.org/big-advance-...
If you haven't encountered @littmath.bsky.social's probability puzzles on the other site, here's your chance to! My latest for @quantamagazine.bsky.social #MathSky
www.quantamagazine.org/perplexing-t...
www.quantamagazine.org/perplexing-t...
Perplexing the Web, One Probability Puzzle at a Time | Quanta Magazine
The mathematician Daniel Litt has driven social media users to distraction with a series of simple-seeming but counterintuitive probability puzzles.
www.quantamagazine.org
August 29, 2024 at 5:10 PM
If you haven't encountered @littmath.bsky.social's probability puzzles on the other site, here's your chance to! My latest for @quantamagazine.bsky.social #MathSky
www.quantamagazine.org/perplexing-t...
www.quantamagazine.org/perplexing-t...
In a "crowning achievement," mathematicians have proved a major part of the profound mathematical vision called the Langlands program -- my latest for
@quantamagazine.bsky.social #MathSky www.quantamagazine.org/monumental-p...
@quantamagazine.bsky.social #MathSky www.quantamagazine.org/monumental-p...
Monumental Proof Settles Geometric Langlands Conjecture | Quanta Magazine
In work that has been 30 years in the making, mathematicians have proved a major part of a profound mathematical vision called the Langlands program.
www.quantamagazine.org
July 19, 2024 at 5:21 PM
In a "crowning achievement," mathematicians have proved a major part of the profound mathematical vision called the Langlands program -- my latest for
@quantamagazine.bsky.social #MathSky www.quantamagazine.org/monumental-p...
@quantamagazine.bsky.social #MathSky www.quantamagazine.org/monumental-p...
Mathematicians have made the first substantial progress in 80 years on understanding points in the plane that are integer distances apart -- my latest for @quantamagazine.bsky.social
#MathSky
#MathSky
Merging Fields, Mathematicians Go the Distance on Old Problem | Quanta Magazine
Mathematicians have illuminated what sets of points can look like if the distances between them are all whole numbers.
www.quantamagazine.org
April 1, 2024 at 6:37 PM
Mathematicians have made the first substantial progress in 80 years on understanding points in the plane that are integer distances apart -- my latest for @quantamagazine.bsky.social
#MathSky
#MathSky