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Author Archives: Jordana Cepelewicz

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  2. Article author Jordana Cepelewicz

A Grad Student’s Side Project Proves a Prime Number Conjecture

Primitive Sets, Science, Science / Physics and MathBy Jordana CepelewiczJune 19, 2022

Jared Duker Lichtman proved a long-standing conjecture relating prime numbers to a broad class of “primitive” sets. To his adviser, it was a “complete shock.”

Math’s ‘Oldest Problem Ever’ Gets a New Answer

All for 1, Science, Science / Physics and MathBy Jordana CepelewiczMarch 27, 2022

A new proof significantly strengthens a decades-old result about the ubiquity of ways to represent whole numbers as sums of fractions.

Mathematicians Outwit a Hidden Number ‘Conspiracy’

Prime Time, Science, Science / Physics and MathBy Jordana CepelewiczJanuary 30, 2022

Decades ago, a mathematician posed a warmup problem for difficult questions about prime numbers. It turned out to be just as difficult to solve—until now.

To Learn More Quickly, Brain Cells Break Their DNA

Gene Activity, Science, Science / Psychology and NeuroscienceBy Jordana CepelewiczSeptember 5, 2021

DNA double-strand breaks are associated with cancer and aging. A new study shows neurons can use them to quickly express genes related to learning and memory.

Animals Can Count. How Far Does Their Number Sense Go?

Counting Crows, Science, Science / Physics and MathBy Jordana CepelewiczAugust 15, 2021

Crows recently demonstrated an understanding of the concept of zero. It’s only the latest evidence of animals’ talents for numerical abstraction.

DNA Has Four Bases. Some Viruses Swap in a Fifth

Molecular Biology, Science, Science / BiotechBy Jordana CepelewiczJuly 25, 2021

Dozens of viruses don’t use the same four nucleotide bases found in all other life. New work shows how this is possible—and perhaps more common than we think.

The Secret Workings of Smell Receptors, Revealed At Last

Perception, Science, Science / Psychology and NeuroscienceBy Jordana CepelewiczJune 27, 2021

Researchers have finally seen how some of them bind to odor molecules—yielding new insights into one of the most mysterious and versatile senses.

The Brain ‘Rotates’ Memories to Save Them From New Sensations

Science, Science / Physics and Math, Worst Concert EverBy Jordana CepelewiczApril 25, 2021

Some groups of neurons process sensory data and memories at the same time. New work shows how the brain pivots those representations to prevent interference.

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