Science & Tech

Science & Tech

Explore the discoveries that reveal how the world works, alongside the technologies that extend, reshape, and sometimes challenge what’s possible.

Abstract illustration of a figure reaching for a yellow sphere on the left, with colored overlapping circles and concentric arcs—evoking themes of physics and consciousness—set against a vibrant multicolored gradient background.
Many, from neuroscientists to philosophers to anesthesiologists, have claimed to understand consciousness. Do physicists? Does anyone?
Scatter plot with dark blue data points and black dashed elliptical contours centered on the origin, with axes labeled ξ (') horizontally and vertically—similar to plots used by astronomers in studies of the smallest galaxy ever discovered.
With stars, gas, and dark matter, galaxies come in a great array of sizes. This new one, Ursa Major III/UNIONS 1, is the smallest by far.
A man with a beard and short hair smiles at the camera; the background features abstract green, purple, and black-and-white graphic patterns—capturing a confident presence that suggests he may share valuable leadership advice.
The cofounder and CEO of red-hot billing platform Metronome unpacks his leadership journey.
Astro2020
NASA astrophysics, which gave us Hubble, JWST, and so much more, faces its greatest budget cut in history. All future missions are at risk.
Diagram of the solar system with gravitational waves emanating from a distant bright source, and a triangular spacecraft array detecting the waves in space.
Just 10 years ago, humanity had never directly detected a single gravitational wave. We're closing in on 300 now, with so much more to come!
dark energy accelerated expansion
The fact that our Universe's expansion is accelerating implies that dark energy exists. But could it be even weirder than we've imagined?
symmetry
The laws of physics obey certain symmetries and defy others. It's theoretically tempting to add new ones, but reality doesn't agree.
Aerial view of winding rivers and wetlands showcases lush green vegetation and tan sediment-laden water converging with a larger body of water.
The award-winning nature writer, Robert Macfarlane, talks with Big Think about how to reacquaint ourselves with the rivers in our lives.
A healthcare worker wearing gloves administers an injection with a syringe into a person's upper arm, reminding us that when it comes to vaccines, do your own research and stay informed.
For centuries, vaccines have been the top life-saving, expert medical intervention known to humans. How can individuals make the right call?
baryon acoustic oscillations
It took nearly 400,000 years, after the Big Bang, to first form neutral atoms. The imprints from that early time can now be seen everywhere.
A dense field of stars and galaxies is visible against a black background, with some bright stars showing lens flares.
The COSMOS-Web survey is now complete, combining JWST and Hubble infrared data. Its spectacular views show us the Universe as never before.
Visualization of a section through the large-scale structure of the universe highlighting cosmic web patterns and distributions.
Since 1998, we've known our Universe isn't just expanding, but the expansion is accelerating. Could the Big Bang itself be the reason why?
graphene atoms
For millennia, diamonds were the hardest known material, but they only rank at #7 on the current list. Can you guess which material is #1?
A man in a suit holds up a Hurricane Dorian forecast map in an office, tracing the storm’s projected path and intensity over several southeastern U.S. states and the Bahamas—echoing the urgent clarity of a 1938 science manifesto defending democracy.
As democracy recedes and fascism rises in the USA and around the world in 2025, history provides a lesson in how science can fight fascism.
Illustration of a thumbs up and thumbs down, resembling a like button and dislike button, on a black background, both partially covered with red scribble marks.
Will platforms continue to offer the like button as an all-purpose tool — or will each of the button’s various functions exist in new forms?
Illustration of a large particle accelerator facility underground, with scientists working and a city landscape above ground.
The laws of nature are almost perfectly symmetric between matter and antimatter, and yet our Universe is made ~100% of matter only. But why?
A repeating pattern of wireframe 3D geometric shapes intersected by diagonal yellow lines on a black background, evoking a physics break down of forms at the Planck scale.
There are limits to where physics makes meaningful predictions: beyond the Planck length, time, or energy. Here's why we can't go further.
A man in a black suit sits on a chair against a white backdrop, surrounded by several monarch butterflies on a bright blue background.
1hr 36mins
"It's a true fact, but a bizarre one, that the reason why hundreds of thousands of people died in Hiroshima and Nagasaki rather than Kyoto and Kokura, is because of a 19-year-old vacation and a passing cloud."