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image: Week in Review, July 22–26

Week in Review, July 22–26

By Jef Akst | July 26, 2013

Faux stem cells; X chromosome involved in sperm production; rewarding peer review; clues to flatworm regeneration; an ethereal glow signals death

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image: A Wild Stem Cell Chase

A Wild Stem Cell Chase

By Signe Cane | July 24, 2013

A rigorous new study provides strong evidence that very small embryonic-like stem cells hypothesized to be found in mice and humans do not exist.

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image: Dying Worms Emit Ethereal Glow

Dying Worms Emit Ethereal Glow

By Ruth Williams | July 24, 2013

A head-to-tail wave of blue fluorescence signals the death of a nematode worm.

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image: A Fly on the Wall

A Fly on the Wall

By Dan Cossins | July 19, 2013

A geneticist-turned-filmmaker is making a movie set in Columbia University’s famous Fly Room, where the foundations for modern genetics were laid.

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image: Gene Therapy Coming of Age?

Gene Therapy Coming of Age?

By Dan Cossins | July 11, 2013

Using lentiviral vectors to replace mutated genes in blood stem cells, scientists successfully treat two rare diseases apparently without causing harmful side effects.

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image: The Downside of Antibiotics?

The Downside of Antibiotics?

By Ruth Williams | July 3, 2013

Bacteria-killing antibiotics might also damage a person’s tissues.

3 Comments

image: Temperature-Sensing Fat Cells

Temperature-Sensing Fat Cells

By Dan Cossins | July 1, 2013

Researchers discover that unlike brown fat cells, white fat cells can directly sense cooling temperatures to switch on genes that control heat production.

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In Chapter 3, “From Mating to Conception,” author Robert Martin explores the question of why humans and other primates frequently engage in sexual intercourse when females are not fertile.

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image: Capsule Reviews

Capsule Reviews

By Annie Gottlieb | July 1, 2013

Denial, Probably Approximately Correct, Permanent Present Tense, and Against Their Will

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image: Widening the Fertile Window

Widening the Fertile Window

By Robert Martin | July 1, 2013

Women may be able to store viable sperm for longer than a week, thus contributing to apparent variability in pregnancy lengths.

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