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Today, the CMB — cosmic microwave background — remains observable. This composite image shows the microwave sky as imaged by three generations of spaceborne CMB missions: COBE (1990s), WMAP (2000s), and Planck (2010s). With time, we’ve become more sensitive to smaller-magnitude temperature and polarization features at progressively smaller angular scales. Credit : Smoot Cosmology Group/LBL/ESA This leftover radiation from the Big Bang, 13.8 billion years on, measures 2.725 K. The unique predicti

The second map ever featured on Strange Maps — back in 2006, when it was still a fledgling WordPress blog — was a literary take on Maine. It showed the real and imagined places that tether Stephen King’s horror stories to the rugged landscape of his home state. On the map, fictional towns like Derry, Castle Rock, and Lake Kashwakamak jostle for space with the real ones that inspired them, including Bangor, Skowhegan, and Portland. I was mesmerized by both that duality — the tension between actua

When we gaze out into the abyss of space, it seems like the most peaceful, serene of sights. Night after night, the planets and our Moon migrate predictably — like clockwork — while the stars, the Milky Way, and even extragalactic objects hardly change at all over time. Sure, there are occasional cataclysms, including stars that die and new lights that briefly appear before fading away, as the shining stars burn through their fuel, evolve, and sometimes even interact. But space itself, although

Philosopher Jonny Thomson walks through Dietrich Bonhoeffer’s 3 conditions for the kind of stupidity that destroys societies: outsourcing your thinking to an authority, willful ignorance, and conformity. He shows how each one shows up today, from AI answering our moral questions to political parties enforcing loyalty over conviction. This video A philosopher’s guide to thinking for yourself in an age built to think for you is featured on Big Think .

Physician Giulia Enders spent years studying the gut before realizing no organ works alone. Here, she walks through 5 body parts — the lung, the immune system, the skin, the muscles, and the brain — and what each one reveals about how we work, heal, and recover. This video Physician: The outdated mindset that gets in the way of our healing is featured on Big Think .

Big Think hosted its inaugural live event to bring our summer special issue, The Opt-Out Nation , to life. Join our candid conversation with the editors and writers behind it, featuring voices from The New York Times , WIRED , and County Highway . Hosted by Big Think producer and director Dan Hayes. This video Live with Big Think: Inside “The Opt-Out Nation” is featured on Big Think .

As humans, we instinctively understand that time has profound worth, regardless of any workplace benefits. This is what sabbatical alumni mean when they ascribe a feeling of humanity to their time off. Unfortunately, the burden of proof for many is to somehow provide an equation of increased productivity. While this misses the point of what taking time off is all about, there is a lens from psychology that can help us understand the benefits in more tangible terms: conservation of resources theo

Psychologist Paul Bloom explains why morality, the thing that makes cooperation and trust possible, is also what drives cruelty, cycles of revenge, and wars where both sides believe they’re the moral ones. This video The psychology of revenge, in 19 minutes is featured on Big Think .

From writing ‘Cop Killer’ to playing a cop on SVU , ICE-T is no stranger to personal evolution. After losing both parents by seventh grade, he was sent to Los Angeles, where he learned to survive without a family. Here, he hustled for money and respect until rap gave him another route. Eventually, acting opened another path, forcing him to step outside the persona he built to protect himself. Now, in his late 60s, he understands that the chaos of his early life existed to propel him forward, and

There are a lot of people who think they know what science is, what science tells us, and how to evaluate claims based on their scientific merits. But are their assessments accurate? How do you, yourself, conceive of science? Do you do what most people do, and default to what you learned about science across a variety of classes in school, with a layer of cynicism and skepticism layered atop it? That’s understandable, as many of us remember being taught “facts” in our science classes that later

If you spend any time on the artsy and philosophical side of social media (of which I am a proud denizen), you will eventually stumble upon some nostalgia-made-cool. I am as guilty as the rest. Because English has only a few words for nostalgia-adjacent emotions — like heartache, homesickness, or sorrow — English speakers tend to grasp thirstily for what other languages have to say. And other languages certainly seem to have richer accounts of a complex emotion. In Portuguese, you have “ saudade