From fish in jars to rare seeds and microbes, hundreds of millions of biological specimens are stored around the U.S., and caretakers are trying to make them accessible for future research.

Diets often fail in the long term because they're too strict or require unnatural eating habits. In a new book, Barry Estabrook turns to science and history to find a weight-loss regimen that works.

Getting the COVID-19 vaccine into most Americans' arms will involve much more than a good supply and logistics. Values such as equity, deep listening, and informed choice are crucial, too.

Many public health experts are now increasingly optimistic about how the pandemic is playing out in the U.S. Here's what they say we can expect for the rest of 2021.

Surveys show that support for COVID-19 vaccines is rising among Black and Latinx populations, now that tens of millions of Americans have safely received the shots.

Researchers have quantified the price paid for fast-spreading COVID-19 infections. Patients who might have survived otherwise perished in crowded ICUs.

These structures made from living human cells are similar to human embryos at the stage when they implant in the womb. They allow scientists to research new ways to treat infertility.

A 1950 law allows the government to award contracts that take priority over all others for national defense. During the pandemic, the law has been used to defend the country against the coronavirus.

Pfizer and Moderna each agreed to supply 100 million doses of COVID-19 vaccine to the U.S. by the end of March. With just under three weeks left, both companies have their work cut out for them.

Infusing blood plasma from people who have recovered from COVID-19 into sick patients looks good on paper. But studies of the treatment haven't found benefits.