SciShow
The Largest Object in the Universe Breaks the Laws of Physics
New ReviewIn March 2025, astronomers announced the "largest cosmic structure discovered to date". They called it Quipu. And Quipu is just the latest entry in a list of structures that are too big for cosmologists to explain without revisiting one...
PBS
Agencies accused of rushing adoptions before mothers can change their minds
As more states limit or ban access to abortion, some are beginning to push adoption as an alternative for women facing unplanned pregnancies. But when do laws go from accommodating to exploitative? From the Center for Investigative...
PBS
Immigrant workers face routine injuries, lack of protections on U.S. dairy farms
Advocates of legal immigration say foreign-born workers have long been a key factor in U.S. economic growth. But are they sharing in the benefits of their contributions? For more than a year, ProPublica has been investigating the harsh...
TED-Ed
TED-Ed: Should you be suing your government? | Shannon Odell
Since 2015, an unprecedented movement has been sweeping courts around the world. Groups of young plaintiffs are suing their governments for their inaction on tackling climate change. These suits argue that climate inaction violates their...
PBS
Can Free Will be Saved in a Deterministic Universe?
Physicists have a long history of sticking our noses where they don’t belong - and one of our favorite places to step beyond our expertise is the question of consciousness and free will. Sometimes our musings are insightful, sometimes...
PBS
The Arrow of Time and How to Reverse It
Ever wish you could travel backward in time and do things differently? Good news: the laws of physics seem to say traveling backward in time is the same as traveling forwards. So why do we seem to be stuck in this inexorable flow towards...
PBS
Will Constructor Theory REWRITE Physics?
The people behind the greatest leaps in physics - Einstein, Newton, Heisenberg, all had the uncanny ability to see the fundamentals - see the deepest, underlying facts about the world, and from simple statements about reality they built...
PBS
How Quantum Entanglement Creates Entropy
Entropy is surely one of the most perplexing concepts in physics. It’s variously described as a measure of a system’s disorder - or as the amount of useful work that you can get from it - or as the information hidden by the system....
PBS
The Truth About Beauty in Physics
The great physicist Hermann Weyl once said: "My work always tried to unite the true with the beautiful, but when I had to choose one or the other, I usually chose the beautiful." But is this actually good advice for doing physics?
PBS
What If Physics IS NOT Describing Reality?
Neils Bohr said, “It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we can say about Nature.” Well it turns out that if we pay attention to this subtle difference, some of the most...
PBS
The Impossibility of Perpetual Motion Machines
Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine has ever been experiment verified. All break the laws of...
SciShow
The 4 Greatest Mysteries of Physics
There are still some great mysteries of our universe that physicists can't explain. How is that possible? Join us as we break down the 4 greatest mysteries of physics in this episode of SciShow hosted by Michael Aranda!
TED Talks
TED: How "second chance" laws could transform the US justice system | Sheena Meade
More than 30 million people in the US are eligible to have their arrest and conviction records cleared -- but most people who qualify either can't afford it or simply don't know it's an option. In this gripping talk, second chance...
PBS
Why several states are pushing to loosen child labor restrictions
The U.S. government found child labor violations involving over 3,800 minors in 2022. At the same time, some states say there is too much regulation of child labor. Katherine Walts, director of the Center for the Human Rights of Children...
PBS
States Push For Harsher School Discipline Practices To Address Student Misbehavior
School administrators and teachers are concerned about ongoing problems with student conduct that are disruptive and difficult to deal with. Several states are beginning to propose big changes about how to handle it. We hear from...
PBS
Low-wage immigrant workers are especially vulnerable to sexual abuse. How can they say #MeToo?
Every day, about 50 people are sexually assaulted or raped in the workplace
in the U.S. While the entertainment industry and the political world have
been in the headlines, the problem extends to those who work in hotels,
clean...
PBS
How Texas gun owners feel about background checks, red flag laws
In the aftermath of recent mass shootings, calls for expanding gun safety regulations have increased. Although some of these ideas are popular among Americans overall, how do gun owners specifically feel about them? William Brangham...
Crash Course
Legal System Basics: Crash Course Government and Politics
This week Craig Benzine takes a first look at the judicial branch. It's pretty easy to forget that the courts, and the laws that come out of them, affect our lives on a daily basis. But how exactly these decisions are made and where each...
PBS
Are the Fundamental Constants Changing?
The laws of physics are the same everywhere in the universe. At least we astrophysicists hope so. After all, it's hard to unravel the complexities of distant parts of the universe if we don't know the basic rules. But what if this is...
PBS
Noether's Theorem and The Symmetries of Reality
Conservation laws are among the most important tools in physics. They feel as fundamental as you can get. And yet they're wrong - or at least they're only right sometimes. These laws are consequences of a much deeper, more fundamental...
MinutePhysics
Do Cause and Effect Really Exist? (Big Picture Ep. 2/5)
Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it! This video is about why there's no such thing as cause and effect at the level of fundamental particle physics, and how our...
SciShow
The Leidenfrost Effect: How to Make a Liquid Levitate
In this video Michael Aranda explains what the Leidenfrost Effect is, and how it can cause liquid to 'levitate'.
SciShow
4 of Physics’ (Other) Greatest Mysteries
Physicists are interested in the big questions like "Where did we come from?" and "What is all this stuff?". But the answers to some of these questions, just lead to more questions.
SciShow
Antimatter Light Spectrum Discovered!
Scientists were able to measure the emission lines of antimatter! And we may have some new clues about how dinosaurs lost their teeth on the way to becoming birds.