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DNA analysis gives clues to how the ancient hominin’s population split and how they interacted with modern humans.

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image: Human Species May Be Much Older Than Previously Thought

Human Species May Be Much Older Than Previously Thought

By Shawna Williams | September 29, 2017

From DNA evidence, researchers estimate the split from other species took place between 260,000 and 350,000 years ago.

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image: Heart’s Backup Pacemaker Mechanisms Identified

Heart’s Backup Pacemaker Mechanisms Identified

By Diana Kwon | July 28, 2017

The sinoatrial node is home to multiple pacemakers that keep the heart beating if the main one falters.

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image: Smarty Genes

Smarty Genes

By Ashley P. Taylor | May 23, 2017

Scientists have identified 40 new genes linked to human intelligence.

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image: The Human Virome

The Human Virome

By Eric Delwart | November 1, 2016

Diverse viruses can be found commingling with human and bacteria cells in and on people’s bodies. Scientists are just beginning to understand how these viruses help and when they can turn pathogenic.

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image: Bigger-Brained Species Have Longer Yawns

Bigger-Brained Species Have Longer Yawns

By Kerry Grens | October 5, 2016

Yawn duration also correlates with the number of cortical neurons, according to a study.

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image: Bigger Brains

Bigger Brains

By Jenny Rood | February 20, 2015

Researchers identify a human DNA element that spurs neurogenesis and brain growth when placed in mice.

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image: The Surprising Evolution of Sex Determination

The Surprising Evolution of Sex Determination

By Rina Shaikh-Lesko | April 23, 2014

A detailed analysis of sex chromosomes finds unexpected evolution of functional Y chromosome genes across species.

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image: The Nose Knows

The Nose Knows

By Rina Shaikh-Lesko | March 25, 2014

The human nose can differentiate more than a trillion odors, a study finds.

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image: Another Obesity-Associated Gene

Another Obesity-Associated Gene

By Rina Shaikh-Lesko | March 13, 2014

Researchers find a new gene connected to obesity in a surprising part of the genome.

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