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image: Hibernating Rodents Feel Less Cold

Hibernating Rodents Feel Less Cold

By | December 19, 2017

Syrian hamsters and thirteen-lined ground squirrels are tolerant of chilly temperatures, thanks to amino acid changes in a cold-responsive ion channel. 

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image: Can Young Stem Cells Make Older People Stronger?

Can Young Stem Cells Make Older People Stronger?

By | December 11, 2017

Small trials using younger donors and elderly recipients hint that mesenchymal stem cell transfers might reduce frailty. 

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Activating genes for reprogramming factors for a short time transforms large numbers of differentiated cells into multipotent forms that could be useful for cell-based therapies.

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image: Child Receives Transgenic Skin Over Most of His Body

Child Receives Transgenic Skin Over Most of His Body

By | November 8, 2017

A combination gene-and-cell therapy has given a boy with a grievous skin disease a new lease on life, and has resolved a dermatology debate to boot.

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image: The Weird Growth Strategy of Earth’s First Trees

The Weird Growth Strategy of Earth’s First Trees

By | October 24, 2017

Ancient fossils reveal how woodless trees got so big: by continuously ripping apart their xylem and knitting it back together.

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image: Coastal Critters Make Epic Voyages After 2011 Tsunami

Coastal Critters Make Epic Voyages After 2011 Tsunami

By | 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: How Poison Frogs Avoid Poisoning Themselves

How Poison Frogs Avoid Poisoning Themselves

By | September 21, 2017

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

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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: Fingerprints of Ongoing Human Evolution Found

Fingerprints of Ongoing Human Evolution Found

By | September 5, 2017

Genetic variants in Alzheimer’s- and smoking-related genes appear to be under selection pressure, according to a study comparing the genomes of old and young participants.

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image: Global Patterns of Human Epigenetic Variation

Global Patterns of Human Epigenetic Variation

By | August 28, 2017

A study of five far-flung human populations gives clues to adaptations to environmental pressures.

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