The way scientists think about fusion changed forever in 2022, when what some called the experiment of the century demonstrated for the first time that fusion can be a viable source of clean energy.

If you’re not familiar with the concept of “world models” just yet, a storm of activity at the start of 2025 gives every indication it may soon become a well-known term. What large language models are ...

Jeff Bezos’s rocket company Blue Origin hopes to become a major rival to SpaceX in the private space industry. But those ambitions are on hold after the company postponed the test launch of its new ...

Bring up germline editing, and most scientists cringe. The idea behind the notorious CRISPR-baby scandal, editing reproductive cells or embryos tinkers with DNA far beyond just the patient—any changes ...

We all know that time seems to pass at different speeds in different situations. For example, time appears to go slowly when we travel to unfamiliar places. A week in a foreign country seems much ...

Interacting with AI chatbots like ChatGPT can be fun and sometimes useful, but the next level of everyday AI goes beyond answering questions: AI agents carry out tasks for you. Simple AI agents can be ...

Every Saturday we post a selection of our favorite science and technology articles from the week. With 2024 nearing its end, we dug through all those posts again to surface 25 stories worth revisiting ...

Despite the hype around AI in recent years, the technology’s disruptive impact has been fairly modest. Experts say that’s likely to change next year as AI agents force their way into all aspects of ...

When human stem cells were discovered at the turn of the century, it sparked a frenzy. Scientists immediately dreamed of repairing damaged tissues due to aging or disease. A few decades later, their ...

Proteins are biology’s molecular machines. They’re our bodies’ construction workers—making muscle, bone, and brain; regulators—keeping systems in check; and local internet—responsible for the ...

In the late 1800s, Spanish neuroscientist Santiago Ramón y Cajal drew hundreds of images of neurons. His exquisite work influenced our understanding of what they look like: Cells with a bulbous center ...

Brain implants have improved dramatically in recent years, but they’re still invasive and unreliable. A new kind of brain-machine interface using living neurons to form connections could be the future ...