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It’s unclear how long protections against infection will last from the initial vaccinations, and health authorities say additional jabs will likely be necessary.

The chance of developing cerebral venous sinus thrombosis was nearly 10 times higher in the two weeks following a diagnosis of SARS-CoV-2 infection than after receiving an mRNA vaccine, a data analysis finds.

Human stem cells injected into early monkey embryos proliferate and contribute to multiple cell lineages over 20 days of embryonic development.

Mice and flies given the polyamine in their diet have increased brain cell metabolism and cognitive function, and epidemiological data hints at a similar benefit in humans.

Scientists from MIT reveal the hidden music in spiderwebs.

The National Academy of Sciences is reviewing complaints about astronomer Geoffrey Marcy and geneticist Francisco Ayala, who left their academic positions following investigations at their institutions.

At a time of fast-paced science and rampant misinformation, can we trust the non–peer-reviewed literature?

The FDA and CDC are investigating a handful of reports of blood clots that occurred several days after people received the one-and-done shot.

The National Academies’ report touches on ethical issues raised by new technologies such as brain organoids and human-animal chimeras, and suggests that current regulatory oversight is sufficient.

These new initiatives would tackle problems relating to health and climate.

The death rate was higher among those who experienced the seizures, according to a study conducted during the early days of the pandemic.

Researchers involved in a long-term project to identify viruses of concern have now assessed the risk factors that could help forecast which pathogens are the most likely to spillover from wildlife to people.