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Iceland's Katla volcano reshapes the glacier covering it
Travel

Iceland's Katla volcano reshapes the glacier covering it

Geothermal heat melts ice from below, creating depressions called ice cauldrons on the surface. Meltwater carries evidence of the hidden activity into…

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Why some memories play like a movie from outside
Psychology

Why some memories play like a movie from outside

When you remember an event, you don’t simply replay a recording from behind your own eyes. Your mind reconstructs the scene, and it can choose an outside…

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Hermes Trismegistus mapped a post-mortem prison break through seven demonic planetary tollhouses
Myths & mysteries

Hermes Trismegistus mapped a post-mortem prison break through seven demonic planetary tollhouses

The Corpus Hermeticum describes the soul ascending through seven planetary spheres after death, shedding negative influences associated with each one. Only…

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Why warmth can make strangers seem more trustworthy
Psychology

Why warmth can make strangers seem more trustworthy

A warm mug can change more than your hands. Physical warmth is closely linked in the mind with social warmth, so holding something warm can nudge a stranger’s…

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A large trial tested whether blood-pressure pills needed a bedtime
Health

A large trial tested whether blood-pressure pills needed a bedtime

The TIME study followed more than 21,000 people assigned to morning or evening dosing and found no significant difference in major cardiovascular outcomes. An…

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How the Fed's bond sales can raise mortgage costs
Economy

How the Fed's bond sales can raise mortgage costs

Mortgage rates can feel the Fed’s absence as well as its purchases. When it stops buying mortgage-backed securities—or sells them—buyers have to absorb more…

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Berlin turned an airport's runways into public space
Travel

Berlin turned an airport's runways into public space

After Tempelhof closed, the airfield opened as Tempelhofer Feld in 2010. People could cycle, skate, fly kites, and picnic on land formerly organized around…

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Your pancreas can become fatty too
Health

Your pancreas can become fatty too

The pancreas is not immune to fat storage: fat can build up within the organ and may affect its insulin-producing beta cells. Because insulin helps control…

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Why Big Bird was designed to look harmless
Culture & entertainment

Why Big Bird was designed to look harmless

Big Bird’s oversized head tilts down, and his loose limbs and waddling walk make him seem clumsy rather than threatening. Jim Henson and Kermit Love designed…

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An LCD screen can go dark where its molecules lose alignment
Science

An LCD screen can go dark where its molecules lose alignment

Liquid crystals control how light passes through the screen by lining up in particular ways. A defect in that alignment can disrupt the light and create a…

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How scientists scan Earth's core without digging
Science

How scientists scan Earth's core without digging

IceCube does not peer through Earth like a giant flashlight. It counts neutrinos arriving from different directions: those that pass through the denser core…

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When acne-like inflammation forms tunnels under the skin
Health

When acne-like inflammation forms tunnels under the skin

When hair follicles become blocked and inflamed, the problem can extend beneath the surface instead of staying like a spot on top of the skin. In hidradenitis…

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How sweat can turn metal tools into a rash hazard
Health

How sweat can turn metal tools into a rash hazard

Sweat can dissolve tiny amounts of nickel from a tool and carry the metal ions into the skin. In someone sensitive to nickel, that contact can trigger an…

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Why checking again can make you trust your memory less
Psychology

Why checking again can make you trust your memory less

Checking again can turn attention from the memory itself to the question of whether you can trust it. Each replay highlights the possibility of having missed…

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A Himalayan monastery grows out of a cave mouth
Travel

A Himalayan monastery grows out of a cave mouth

Phuktal's buildings cluster on a cliff above the Tsarap River in Zanskar, with a natural cave at the center of the complex. The final approach is on foot.…

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These microscopic algae build armor from glass
Science

These microscopic algae build armor from glass

A diatom takes silica from seawater and builds a hard, detailed shell around its single cell. The shell comes in two overlapping pieces, like a box whose lid…

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An immune reaction can make food get stuck on the way down
Health

An immune reaction can make food get stuck on the way down

Eosinophilic esophagitis brings inflammatory cells into the lining of the esophagus. Over time, swelling and scarring can narrow the passage, so swallowing…

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Roman soldiers got citizenship on bronze diplomas
History

Roman soldiers got citizenship on bronze diplomas

Rome made citizenship a reward for 25 years of auxiliary service. Veterans received two inscribed bronze tablets wired together, extending citizenship to…

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