Life
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- Animals
Sing a song of bird phylogeny
A new study challenges assumptions about birdsong, finding that the majority of songbird species have female singers.
- Health & Medicine
Imbalance in gut bacteria may play role in Crohn’s disease
Identifying the onset of Crohn’s disease may best be done by looking at bacteria in the cellular linings intestinal tissue.
- Paleontology
Fossil whale skull hints at echolocation’s origins
Ancestors of toothed whales used echolocation as early as 34 million years ago, analysis of a new fossil skull suggests.
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- Neuroscience
Pianists learn better by playing
Pianists’ muscle memory helped them recognize incorrect notes.
- Animals
Chimps catch people’s yawns in sign of flexible empathy
Chimpanzees may show humanlike empathy, as evidenced by their contagious yawning.
- Neuroscience
Brain chemicals help worms live long and prosper
Serotonin and dopamine accompany long lives in C. elegans worms under caloric restriction.
- Health & Medicine
Second wave of bird flu ups pandemic worries
The H7N9 avian influenza virus, which first appeared in 2013, is sweeping China with a second, larger wave of illness.
- Life
Acid-bath method for making stem cells under fire
No one has been able to reproduce a new technique for creating stem cells called STAP cells, leading some researchers to call for the retraction of the original research papers.
- Planetary Science
Feedback
Readers respond to a special report on neuroscience and discuss moon dust.
- Animals
Elephants can tell men’s voices from women’s
Amboseli elephants may pick out age and gender — and even distinguish between languages — when listening to human voices.
