Adults over 65 generally have weaker immune systems, and women mount a stronger immune response to the vaccine in general.
Dr. Justin Skrzynski told CNN that 40% of the samples his hospital is sending to be tested have come back as the more transmissible B.1.1.7 variant.
Chunks of dense rock hundreds of miles tall lurk in Earth's mantle. They may have come from an ancient planet named Theia that once hit Earth.
According to the CDC's vaccination tracker, the 100 million doses count for about 30% of the US population.
Two sets of photos taken on Mars recently showcase NASA's growing efforts to explore the red planet.
Scientists spent almost a year monitoring Captain Scott Kelly on the International Space Station. His heart returned to normal size after he landed.
Elon Musk's company is heightening the risk of collisions between space objects by putting more satellites in orbit, space industry experts say.
A NASA Perseverance rover driver explains what it's like driving a nuclear-powered machine during a pandemic and how she manages a work-life balance.
The owners of Atilis Gym were arrested last summer after keeping their indoor gym open for months in violation of the governor's shutdown order.
The research aims to definitively answer whether vaccinated people are protected from getting infected and spreading the coronavirus.