Richard Prum explains why he thinks feathers and vibrant traits in birds evolved not solely for survival, but also through aesthetic choice.
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Climate Physicists Face the Ghosts in Their Machines: Clouds
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The planet is getting hotter, but one factor in particular makes it hard to tell just how hot it will get. Physicists and computer scientists are racing to solve the problem of clouds.
The Biophysical World Inside a Jam-Packed Cell
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A New Complexity Theory for the Quantum Age
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Are the Mysteries of Quantum Mechanics Beginning To Dissolve?
Columnist Philip Ball thinks the phenomenon of decoherence might finally bridge the quantum-classical divide.
Physicists Make Electrons Flow Like Water
We describe electricity as a flow, but that’s not what happens in a typical wire. Physicists have begun to induce electrons to act like fluids, an effort that could illuminate new ways of thinking about quantum systems.
Long-Sought Proof Tames Some of Math’s Unruliest Equations
Mathematicians finally understand the behavior of an important class of differential equations that describe everything from water pressure to oxygen levels in human tissues.
Expansion Microscopy Has Transformed How We See the Cellular World
How physically magnifying objects using a key ingredient in diapers has opened an unprecedented view of the microbial world.
How Modern and Antique Technologies Reveal a Dynamic Cosmos
Today’s observatories document every pulse and flash in the sky each night. To understand how the cosmos has changed over longer periods, scientists rely on a more tactile technology.
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See all videosThe Biggest Breakthroughs in Mathematics: 2025
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The Quantum Mechanics of Greenhouse Gases
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