Small circles of extrachromosomal DNA appear to be widespread in mammals, and may be byproducts of small deletions in the nuclear DNA of somatic cells.

A fungal disease that is plaguing banana plants around the world originated in South East Asia.

Named Guidraco venator for “ghost dragon hunter,” a 120 million-year-old fossil skull appears most closely related to pterosaurs found in Brazil.

Bioethicist Glenn McGee, founder of the American Journal of Bioethics, resigned from a controversial stem cell company.

Using RNA viruses to silence genes could optimize tissue targeting while reducing toxicity.

Researchers reconstruct a new giant penguin species from fossils unearthed in New Zealand.

Researchers succeed in magnetizing yeast cells, providing insight into how magnetism could be genetically induced in other organisms.

Adult human ovaries contain a population of stem cells capable of generating immature egg cells.

Researchers show that retrotransposons can influence phenotypic variation by triggering early transcription termination.

Scientists find radioactive elements 600 kilometers from Fukushima—but levels are not harmful to human health.

Bioethicists debate how to remain impartial as a bioethics journal editor joins company that peddles unproven stem cell therapies.

Scientists are getting more citizens than ever involved in research projects that could impact their communities.