Author archives: Mapping Ignorance

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Peak glacier extinction

Peak glacier extinction

Geosciences

By Mapping Ignorance

Glaciers are melting worldwide. In some regions, they could even disappear completely. Looking at the number of glaciers disappearing, the Alps could reach their peak loss rate as early as 2033 to 2041. Depending on how sharply the planet warms, this period may mark a time when more glaciers vanish than ever before. Worldwide, the […]

Dynamic diversity of astrocytes charted in new atlas

Dynamic diversity of astrocytes charted in new atlas

NeurobiologyNeuroscience

By Mapping Ignorance

When it comes to brain function, neurons get a lot of the glory. But healthy brains depend on the cooperation of many kinds of cells. The most abundant of the brain’s non-neuronal cells are astrocytes, star-shaped cells with a lot of responsibilities. Astrocytes help shape neural circuits, participate in information processing, and provide nutrient and […]

What the rocks from asteroid Bennu reveal about the chemical origins of life

What the rocks from asteroid Bennu reveal about the chemical origins of life

BiochemistryChemistryEvolutionPlanetary Science

By Mapping Ignorance

In September 2023, NASA’s OSIRIS-REx spacecraft brought home a remarkable gift: the first pristine sample ever collected from a carbon-rich asteroid called Bennu. After two years of careful study in laboratories worldwide, scientists have confirmed that Bennu’s dust and pebbles contain many of the very same small molecules life on Earth relies on as its […]

Reading a quantum clock costs more energy than running it

Reading a quantum clock costs more energy than running it

Computer scienceEnergyQuantum physics

By Mapping Ignorance

A new study has identified a surprising source of entropy in quantum timekeeping—the act of measurement itself. The researchers demonstrate that the energy cost of “reading” a quantum clock far outweighs the cost of running it, with implications for the design of future quantum technologies. Clocks, whether pendulums or atomic oscillators, rely on irreversible processes […]

The ‘impossible’ merger of two massive black holes

The ‘impossible’ merger of two massive black holes

Astrophysics

By Mapping Ignorance

Author: Mara Johnson-Groh, Simmons Foundation In 2023, astronomers detected a huge collision. Two unprecedentedly massive black holes had crashed an estimated 7 billion light-years away. The enormous masses and extreme spins of the black holes puzzled astronomers. Black holes like these were not supposed to exist. Now, astronomers with the Flatiron Institute’s Center for Computational […]

Animal origami: The physics of nature’s folds

Animal origami: The physics of nature’s folds

BiologyMechanical EngineeringPhysics

By Mapping Ignorance

Author: Rohini Subrahmanyam is a PhD biologist turned science journalist. Insects that tuck away wings; a protist with an accordion-like neck — studying these clever creases may inspire foldable structures for drones As the microscopic, tear-shaped Lacrymaria olor swims around hunting for food, it does something remarkable: In a blink, the tiny protist extends its […]

Bubble wrap and non-destructive testing

Bubble wrap and non-destructive testing

Mechanical Engineering

By Mapping Ignorance

Non-destructive testing allows engineers to evaluate the integrity of structures such as pipelines, tanks, bridges, and machinery without dismantling them. Conventional approaches rely on loudspeakers, lasers, or electric sparks. While effective, these systems can be difficult or dangerous to use in flammable or confined areas and require considerable power to function effectively. Now, a new […]