Stories by Ewen Callaway

The Lepidopteran is the first one found to have sex determined by RNA rather than by a protein

An engineered bacterium is able to copy DNA that contains unnatural genetic code

Treatment guidelines for the virus highlight the challenges of paying for expensive drugs in low-income countries

The new analysis of "Clovis boy" DNA also stirs an ethics debate about the handling of tribal remains

Newly discovered mutations are helping tuberculosis to stay infectious while evolving resistance to multiple drugs

Monitor lizards extract oxygen both when they inhale and exhale, perhaps explaining why they are so successful as a species

Analysis of oldest sequence from a human ancestor reveals close link with Denisovans

Genetic imprint from traumatic experiences carries through at least two generations

Sanger is one of only three scientists to have been awarded two Nobel Prizes in the sciences

Infants that would later be diagnosed with the disorder began to avoid eye contact at two months of age

23andMe says it has no plans to pursue concepts discussed in its patent for a method to predict a baby's traits based on its parents' DNA

The family of the woman whose cells have helped advance a great deal of biological research has agreed to a case-by-case release of her genomic data

A sugar matrix could be trapping would-be tumors in these long-lived mammals

Researchers disagree over the whens and wheres of canine domestication

Electrical brain stimulation benefitted subjects for months, but critics point to the study's small size

Ancient DNA suggests that the ancient Cretans descended from Neolithic populations

The genome of the cell line, which originated from a deadly cervical tumor taken from a patient named Henrietta Lacks, is riddled with errors, raising questions about its continued use in research

A newly discovered biochemical technique could aid in the recovery of the precious metal from mine waste

An inactivated virus vaccine, delivered by injection rather than orally, could be key to eradicating polio globally

A cognitive scientist who studies numerical cognition and a learning disability likened to dyslexia for mathematics works on identifying its cause as well as ways to help those who suffer from it

New study hints at a biological cause for middle-age blues

A contentious theory was recently put to the test with an almost life-size replica

The mimicry of the whale, now deceased, was no match for that of a parrot, but is an example of vocal learning, nonetheless

Climate records from a Japanese lake are providing a more accurate timeline for dating objects as far back as 50,000 years