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image: In Canada, Signs of Life Nearly 4 Billion Years Old

In Canada, Signs of Life Nearly 4 Billion Years Old

By Ashley P. Taylor | September 28, 2017

Embedded within 3.95-billion-year-old rock, scientists have found graphite with a carbon signature that indicates biological activity.

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image: Coastal Critters Make Epic Voyages After 2011 Tsunami

Coastal Critters Make Epic Voyages After 2011 Tsunami

By Ashley Yeager | September 28, 2017

Marine species survived rafting thousands of kilometers on debris swept into the water by the giant wave, scientists say.

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image: Water Level in a Cell Can Determine Its Fate

Water Level in a Cell Can Determine Its Fate

By Kerry Grens | September 27, 2017

Adding or removing water changes how stem cells differentiate.

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image: How Poison Frogs Avoid Poisoning Themselves

How Poison Frogs Avoid Poisoning Themselves

By Abby Olena | September 21, 2017

Amphibians resist their own chemical defenses with amino acid modifications in the sequence for a target receptor.

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image: CRISPR Used in Human Embryos to Probe Gene Function

CRISPR Used in Human Embryos to Probe Gene Function

By Ashley P. Taylor | September 20, 2017

OCT4 is necessary for blastocyst formation in the human embryo, researchers report.

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image: Second Chance for Lost Galapagos Tortoises?

Second Chance for Lost Galapagos Tortoises?

By Bob Grant | September 14, 2017

Researchers are trying to recreate an extinct species of the lumbering reptiles by breeding closely related species that contain traces of the lost lineage’s DNA.

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image: Image of the Day: It’s Alive

Image of the Day: It’s Alive

By The Scientist Staff | September 14, 2017

New microscopy techniques reveal that heterochromatin—the condensed, seemingly dormant portions of DNA—is not as dense as scientists once thought.

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image: Two Genetic Forensics Techniques Draw Fire

Two Genetic Forensics Techniques Draw Fire

By Shawna Williams | September 12, 2017

Defense attorneys allege New York City used “unreliable” methods on DNA evidence in thousands of cases.

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A study of a simple marine animal suggests that the common ancestor of cnidarians and bilaterians may have had three germ layers instead of two.

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image: Mongolian Dinosaurs and the Poaching Problem

Mongolian Dinosaurs and the Poaching Problem

By David Moscato | September 8, 2017

High-profile cases of poached fossils shine a light on the black market for paleontological specimens—and how scientists and governments are trying to stop it.

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