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Scientists use stem cells to create models of human embryos and study our earliest days

Scientists use stem cells to create models of human embryos and study our earliest days

Scientists have created embryo models to help study the mysteries of early human development, the medical problems that...

This Is the Earliest We Can Expect a COVID Vaccine for Little Kids

This Is the Earliest We Can Expect a COVID Vaccine for Little Kids

The wait for COVID-19 vaccines for kids has been excruciating. The 5-to-11 age group , nearly a year after the vaccines...

Pfizer: Mid-November earliest it can seek virus vaccine OK

Pfizer: Mid-November earliest it can seek virus vaccine OK

Pfizer CEO says it can't seek emergency authorization of its COVID-19 vaccine before the third week of November — and th...