CuriousMinds

A new force of nature is reshaping the planet, study finds

Human societies didn’t just adapt to the planet—they learned to reshape it. From early fire use to today’s global supply chains, our cultural and social innovations have unlocked extraordinary power to transform Earth and improve human life. But that progress has come with serious costs, including climate change, pollution, and mass extinction. Instead of framing this era—the Anthropocene—as pure crisis, Erle Ellis argues it’s also proof of something hopeful: when people work together, they can drive massive positive change.

Human societies have not just adapted to the natural world. They have steadily learned how to transform it. Drawing on research from archaeology, ecology, anthropology, and evolutionary theory, Erle Ellis, professor of geography and environmental systems at the University of Maryland Baltimore County, explains how cultural practices have evolved to give humans extraordinary influence over the ecosystems that sustain them.

Scientists just found a way to control electrons without magnets

A surprising breakthrough in physics could reshape the future of computing by tapping into a strange, previously untapped property of matter. Scientists have shown that tiny atomic vibrations—called chiral phonons—can directly transfer motion to electrons, allowing them to carry information without magnets, batteries, or even electricity. This opens the door to a new field known as orbitronics, where data is processed using the orbital motion of electrons instead of traditional charge or spin.

As computing demands continue to surge, scientists are exploring the quantum world for smarter ways to process massive amounts of data. One promising direction is a field called orbitronics, which focuses on using the motion of electrons around an atom's nucleus, known as orbital angular momentum, to carry and store information more efficiently. Traditionally, controlling this motion has required magnetic materials such as iron, which are heavy,…

Are your memories real? Physicists revisit the Boltzmann brain paradox

A new analysis of the “Boltzmann brain” paradox suggests our memories and sense of reality could, in theory, be random illusions born from cosmic chaos. By uncovering circular reasoning in how physicists think about time and entropy, the study raises fresh doubts about what we can truly know about the past.

In a new study, SFI Professor David Wolpert, SFI Fractal Faculty member Carlo Rovelli, and physicist Jordan Scharnhorst take a fresh look at a famous and unsettling idea in physics and cosmology known as the "Boltzmann brain" hypothesis. This concept suggests that our memories, perceptions, and observations might not reflect a real past at all. Instead, they could have formed randomly through fluctuations in entropy, giving the appearance of a coherent history that never actually occurred.

The puzzle comes from a deep tension within statistical physics. A key foundation…

A surprising foam discovery could change everyday products

Foams have long baffled scientists because liquid drains from them far sooner than theory predicts. New research shows the reason: the bubbles don’t stay put—they rearrange, opening pathways for liquid to escape. The key factor is the pressure needed to shift bubbles, not just push liquid through them. This insight reshapes how we understand foams and could improve everyday products.

Researchers at Tokyo Metropolitan University have uncovered the real reason liquid drains from foams, resolving a long-standing scientific puzzle. Traditional physics models have consistently overestimated how tall a foam must be before liquid begins to leak out. By closely observing foam behavior, the team found that the key factor is not simply liquid moving through a fixed structure, but the pressure needed to rearrange the bubbles themselves. This finding emphasizes how important dynamic processes are when studying soft materials.

Anyone who has…