Jordana Cepelewicz

Staff Writer

Two arrows that are intertwined for most of their length but then point in different directions.
Abstractions blog

In Brain Waves, Scientists See Neurons Juggle Possible Futures

February 24, 2020

Faced with a decision, the brain weighs its options by bundling them into rapidly alternating cycles of brain waves.

Illustration of an RNA sequence, with an arrow pointing from one end to the other, and a sequence of complementary nucleotides, with an arrow pointing the other way.
Abstractions blog

New Clues About ‘Ambigram’ Viruses With Strange Reversible Genes

February 12, 2020

For decades, scientists have been intrigued by tiny viruses whose genetic material can be read both forward and backward. New research begins to explain this puzzling property.

Micrograph of a section of brain organoid tissue.

An Ethical Future for Brain Organoids Takes Shape

January 23, 2020

Collaborations in progress between ethicists and biologists seek to head off challenges raised by lab-grown “organoids” as they become increasingly similar to human brain tissue.

Micrograph of a cortical neuron, showing its many dendrites.

Hidden Computational Power Found in the Arms of Neurons

January 14, 2020

The dendritic arms of some human neurons can perform logic operations that once seemed to require whole neural networks.

Abstractions blog

Biodiversity Alters Strategies of Bacterial Evolution

January 6, 2020

In evolution, context is everything: Bacteria with neighbors evolve to rebuff viruses in a different way.

Animated representation of locusts tracked by a computer move across a screen.

To Decode the Brain, Scientists Automate the Study of Behavior

December 10, 2019

Machine learning and deep neural networks can capture and analyze the “language” of animal behavior in ways that go beyond what’s humanly possible.

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.

‘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.

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.”