Jordana Cepelewicz

Staff Writer

Illustration of a woman with “hands” behind her eyes and “eyes” in her hands, showing how the brain integrates its sense of the world with the actions to be taken in response.
neuroscience

‘Noise’ in the Brain Encodes Surprisingly Important Signals

November 7, 2019

Activity in the visual cortex and other sensory areas is dominated by signals about body movements, down to little tics and twitches. Scientists are now rethinking how they study and conceive of perception.

A fractal pattern.
neuroscience

A Power Law Keeps the Brain’s Perceptions Balanced

October 22, 2019

Researchers have discovered a surprising mathematical relationship in the brain’s representations of sensory information, with possible applications to AI research.

Photo of lithium batteries
Abstractions blog

Nobel Awarded for Lithium-Ion Batteries and Portable Power

October 9, 2019

John Goodenough, M. Stanley Whittingham and Akira Yoshino shared the 2019 Nobel Prize in Chemistry for developing lithium-ion batteries, “the hidden workhorses of the mobile era.”

Climbing up the side of a high mountain peak.
Abstractions blog

Nobel Prize Awarded for Discoveries on How Cells Adapt to Oxygen

October 7, 2019

The 2019 Nobel Prize in Physiology or Medicine honored William Kaelin Jr., Peter Ratcliffe and Gregg Semenza for their work on elucidating how cells adjust to low oxygen levels.

An osprey flying low over a river holds a trout in its claws.
Abstractions blog

Your Brain Chooses What to Let You See

September 30, 2019

Beneath our awareness, the brain lets certain kinds of stimuli automatically capture our attention by lowering the priority of the rest.

The illustration shows ghostly hands partially obstructing a person’s sight and hearing.
neuroscience

To Pay Attention, the Brain Uses Filters, Not a Spotlight

September 24, 2019

A brain circuit that suppresses distracting sensory information holds important clues about attention and other cognitive processes.

3D illustration of a complex atomic structure.
Abstractions blog

Origin-of-Life Study Points to Chemical Chimeras, Not RNA

September 16, 2019

Origin-of-life researchers have usually studied the potential of pure starting materials, but messy mixtures of chemicals may kick-start life more effectively.

3D illustration of three human skulls, split into left and right halves and nested one inside the next.
evolution

Fossil DNA Reveals New Twists in Modern Human Origins

August 29, 2019

Modern humans and more ancient hominins interbred many times throughout Eurasia and Africa, and the genetic flow went both ways.

An illustration of a machine with two mechanical arms sorts cells by size into processing lines marked “Asymmetric Division” and “Symmetric Division.”
developmental biology

For Embryo’s Cells, Size Can Determine Fate

August 12, 2019

Modeling suggests that many embryonic cells commit to a developmental fate when they become too small to divide unevenly anymore.

About the author

Jordana Cepelewicz is a staff writer at Quanta Magazine who covers biology. Her writing about mathematics, neuroscience and other subjects has also appeared in Nautilus and Scientific American. Before entering the world of science reporting, Jordana did editorial work at Harper’s MagazinePolitico and Tea Leaf Nation. She graduated from Yale University in 2015 with bachelor’s degrees in mathematics and comparative literature.