Joe Palca
Stories
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National
FDA Permits Pfizer Vaccine For Children As Young As 12
The FDA has said that the COVID-19 vaccine made by Pfizer can be used in children as young as 12, expanding the number of people in the U.S. who qualify for the vaccine.
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Health
Giving 2 Doses Of Different COVID-19 Vaccines Could Boost Immune Response
Using two different COVID-19 vaccines is a bit like giving the immune system two pictures of the virus, maybe one face-on and one in profile.
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Health
New Blood Tests Should Show How Long A COVID-19 Vaccine Will Protect You
Researchers are trying to come up with tests that can be performed using a blood sample that will determine not only whether a COVID-19 vaccine will work but also for how long.
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National
Scientists Are Working On Booster Shots In Case COVID-19 Vaccines Lose Their Effect
Scientists are working on boosters to deal with the possibility that current COVID-19 vaccines may eventually wear off — or the virus will mutate in ways that will evade the vaccine's protections.
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Out Of Thin Air: NASA Rover Makes Oxygen From Martian Atmosphere
Fresh off the first-ever powered flight on another world, NASA's Mars 2020 mission has managed another key first that could pave the way for future astronauts.
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Science
Success! NASA's Ingenuity Makes First Powered Flight On Mars
The tiny helicopter took off and hovered briefly — the first such flight on another planet. The Perseverance rover kept tabs on the mission from a viewing point about 60 yards away.
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Small Helicopter To Make Historic First Powered Flight On Mars
The first powered flight on Mars is slated for Monday. It's a tissue box sized helicopter that will hover in the super thin Martian atmosphere, take some pictures and, hopefully, land safely.
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Health
Amid Blood Clot Concerns, U.S. Recommends Pausing Use Of J&J Vaccine
The FDA and the Centers for Disease Control and Prevention called for the pause in the use of the Johnson & Johnson vaccine — following reports of blood clots in six women who received the vaccine.
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Health
Scientists Race To Develop Next Generation Of COVID Vaccines
The three vaccines available in the U.S. are safe and effective, but not ideal. Now, work is underway to create more convenient and potent vaccines, including a tablet and nasal spray.
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National
How Is The U.S. Vaccination Effort Going?
Over 100 million Americans have received at least one dose of a COVID-19 vaccine. That number is climbing by about 3 million daily. We hear the latest information on how well the vaccines are working.