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Jordana Cepelewicz

Jordana Cepelewicz is a staff writer at Quanta Magazine.

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

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

September 20, 2019

Immune Cells Measure Time to Identify Foreign Proteins

T-cells identify what belongs in the body by timing how long they can bind to it.

June 11, 2019

Goals and Rewards Redraw the Brain’s Map of the World

Two new studies show that the brain’s navigation system changes how it represents physical space to reflect personal experience.

April 4, 2019

Smarter Parts Make Collective Systems Too Stubborn

As researchers delve deeper into the behavior of decentralized collective systems, they’re beginning to question some of their initial assumptions.

February 28, 2019

Artificial Intelligence Finds Ancient ‘Ghosts’ in Modern DNA

With the help of deep learning techniques, paleoanthropologists find evidence of long-lost branches on the human family tree.

February 7, 2019

Why Evolution Reversed These Insects’ Sex Organs

Among these cave insects, the females evolved to have penises—twice. The reasons challenge common assumptions about sex.

January 31, 2019

What Defines a Stem Cell? Scientists Rethink the Answer

As it becomes clear that the body’s cells have more diverse regenerative capabilities than expected, experts have had to reconsider their approach to stem cell research.

December 14, 2018

“Traffic Jams” of Cells Help to Sculpt Embryos

By measuring mechanical forces inside an embryo for the first time, researchers have shown how a physical “jamming” mechanism assists development.

November 1, 2018

Why Nature Prefers Couples, Even for Yeast

Some species have the equivalent of many more than two sexes, but most do not. A new model suggests the reason depends on how often they mate.

July 18, 2018

Chronological Clues to Life’s Early History Lurk in Gene Transfers

To date the branches on the evolutionary tree of life, researchers are looking at horizontal gene transfers among ancient microorganisms, which once seemed only to muddle the record.

April 25, 2018

Complex Animals Led to More Oxygen, Says Maverick Theory

that new animal behaviors raised oxygen levels and remade the environment.

March 22, 2018

New Giant Viruses Further Blur the Definition of Life

A newfound pair of giant viruses have massive genomes and the most complete resources for building proteins ever seen in the viral world. They have refreshed the debate about the origins of these parasites.

March 5, 2018