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A series of experiments published in the journal Nature Medicine suggest young adult women have primitive stem cells that could generate new eggs. The findings are generating both excitement and questions.

An NIH working group recommends that most of the agency's 360 research chimpanzees be sent to a sanctuary — a non-laboratory setting where chimps can live more natural lives. But even if the NIH accepts the recommendations, putting them into effect won't be easy.

In the early days of the COVID lockdown, Eileen Wurst would seek refuge in a green space in Seattle.

Many assume that sleeping 8 or 9 consecutive hours at night is instinctual. But in a recent essay in Aeon, Karen Emslie says that this sleep schedule is in fact distinctly modern.

Each month, thousands of people across the country become U.S. citizens, and that new title comes with a new responsibility: the right to vote.

Health officials continue to investigate what was behind the outbreak of E. Coli bacteria in bagged fresh spinach, linked to growers in the so-called "salad bowl" of Central California. Consumers are advised not to eat fresh spinach until the source of the contamination is identified.

Bolivia's President Evo Morales has nationalized the country's natural-gas industry. Foreign energy companies have six months to agree to new contracts for operating in the country. Some analysts say Morales may have miscalculated their willingness to remain in Bolivia.

Privately funded scientists made a virus related to smallpox from scratch, hoping their version might lead to a better smallpox vaccine. But critics question the need — and worry about repercussions.

The novel looks at truth and art through the prism of one couple.

"You can evaluate the person as a whole," says Dr. Roberta Miller, who has been a home care physician for more than 20 years. The traditional house call may be the future of medicine.