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image: Braking for Whales

Braking for Whales

By | February 19, 2013

Fossils of four new cetacean species have been discovered at a road construction site in California.


image: Mitochondria Versus Nucleus

Mitochondria Versus Nucleus

By | February 15, 2013

Disruptions in the interaction between nuclear and mitochondrial DNA can lead to deficiencies in the mitochondrial energy-generating process, affecting fitness.


image: Non-coding Repeats Cause Peptide Clumps

Non-coding Repeats Cause Peptide Clumps

By | February 7, 2013

Protein aggregates in the brains of some people with dementia or motor neuron disease have a surprising origin.


image: Stem Cells: Safe Haven For TB

Stem Cells: Safe Haven For TB

By | February 5, 2013

Tuberculosis bacteria find shelter from drugs and the body’s defenses in bone marrow stem cells.


image: Microbial Metallurgy

Microbial Metallurgy

By | February 5, 2013

Meet the bacterium that pulls gold ions out of solution and forms tiny nuggets of the precious metal.


image: New TB Vaccine Fails Trial

New TB Vaccine Fails Trial

By | February 4, 2013

One of the most advanced tuberculosis vaccines has failed to protect infants from getting the disease in a clinical trial, but it may be effective in adults.

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image: Stem-Cell Clinic Moves to Mexico

Stem-Cell Clinic Moves to Mexico

By | February 1, 2013

A company offering experimental stem-cell treatments will carry out its procedures in Mexico after the FDA warned that it would need approval to operate in the U.S.  


image: Feeding Time

Feeding Time

By | February 1, 2013

The eating schedule—and not the amount of calories—can make the difference between an obese, diabetic, sick mouse and one with a healthy metabolism.


image: Fellow Travelers

Fellow Travelers

By | February 1, 2013

Collective cell migration relies on a directional signal that comes from the moving cluster, rather than from external cues.

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image: Go Forth, Cells

Go Forth, Cells

By | February 1, 2013

Watch the cell transplant experiments in zebrafish that suggest certain embryonic cells rely on intrinsic directional cues for collective migration.


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