Stories by Ewen Callaway

TB remains a big killer despite the development of a better test for detecting the disease

Alternative explanations challenge whether CRISPR–Cas9 technique actually fixed a genetic mutation as claimed   

Rock-encased bone shard left behind by thieves allowed researchers to determine that the remains are probably more than 13,000 years old

Scientists call for wider access to rare samples rich in DNA

The technology can quickly spread genetic modifications

Famous bell-shaped pots are associated with a group of immigrants who may have displaced Neolithic farmers

The gut microbes of young killifish can extend lifespans

The indigenous people—among the most studied in the world—are first in Africa to draft research guidelines

Analysis paints picture of diets, medicine and possible intimacy with humans

DNA of 500-year-old bacteria is first direct evidence of an epidemic — one of humanity's deadliest — that occurred after Spanish conquest.

Distantly-related plants acquired their ability to eat meat through similar genetic changes

Until this obstacle is overcome, the technology is unlikely to succeed in the wild

A virus that infects bacteria listens to messages from its relatives when deciding how to attack its hosts

Freezing the genetic technology would have been a disaster, scientists say; activists plan to renew the fight

Tallest specimen deduced from 3.7-million-year-old footprints in Tanzania

DNA proves Native American roots of 10,600-year-old skeleton

A large-scale study of ancient feline DNA charts the domestication and global spread of house cats

Sequences of nearly 200 beer-making strains reveal yeast in action

Life came to ice-free Canadian corridor too late to sustain migrations of Clovis and pre-Clovis people

From incubation in a bra to an afterlife under glass, how a cloned sheep attained celebrity status

A study of 44 ancient genomes supports the idea of independent farming revolutions in the Fertile Crescent  

Some admire the project’s audacity, but many say more public debate is needed

Walls of stalagmites in a French cave might have had a domestic or a ceremonial use

A technique to stop children from inheriting mitochondrial diseases has the potential to backfire