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image: Fighting Viruses with RNAi

Fighting Viruses with RNAi

By | October 10, 2013

The long-debated issue of whether mammals can use RNA interference as an antiviral defense mechanism is finally put to rest.


image: Mislabeled Microbes Cause Two Retractions

Mislabeled Microbes Cause Two Retractions

By | October 10, 2013

Two papers on plant immunity have been retracted, and questions remain about others with similar results. 


image: Inducing Pluripotency Every Time

Inducing Pluripotency Every Time

By | September 18, 2013

By removing a single gene, adult cells can be reprogrammed into a stem-like state with nearly 100 percent efficiency.


image: Eat Less and Live Longer?

Eat Less and Live Longer?

By | August 13, 2013

Mice on a low-calorie diet harbor a distinct population of gut microorganisms that helps prolong life.


image: A Wild Stem Cell Chase

A Wild Stem Cell Chase

By | 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 | July 24, 2013

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

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image: Dolphins by Name

Dolphins by Name

By | July 23, 2013

Bottlenose dolphins can recognize and respond to their own “signature whistles,” strengthening the evidence that these whistles function like names.


image: Gene Therapy Coming of Age?

Gene Therapy Coming of Age?

By | 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.


image: The Downside of Antibiotics?

The Downside of Antibiotics?

By | July 3, 2013

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


image: Temperature-Sensing Fat Cells

Temperature-Sensing Fat Cells

By | 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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