DNA from a 9,500-year-old dog from the Siberian island of Zhokhov provides a new picture of sled dogs today, including huskies and malamutes.

Twins show that genes play a significant role in how affectionate women are, but not guys. Plus, tips for how huggers can get through social distancing.

Darwin observed that some plants produce less pollen (and some animals less sperm). New research clarifies how that can be an advantage.

Researchers have pinpointed a gene that causes an aggressive form of breast cancer to rapidly grow in animal models and how to "switch it off."

A study with chickens from Tibet shows that organisms have a kind of "memory" of their ancestral homes that makes adaptation to environmental change easier.

"Patients often ask 'Why am I so unlucky? Why did my cancer spread?' As doctors, we never had an answer... This research provides an explanation."

To stay a step ahead of the immune system and resist eradication, syphilis shuffles DNA in and out of a single gene, a new study shows.

"Pregnancy is such an everyday event—none of us would be here without it—and yet, so many aspects of this process remain puzzling."

Growing plants in germ-free chambers reveals how their genes curate their microbiomes, report researchers.

A study of people with Down syndrome and Alzheimer's disease highlights the importance of amyloid. But it also shows that's not the only factor.