Joe Palca Joe Palca is a science correspondent for NPR.
Joe Palca, photographed for NPR, 17 January 2019, in Washington DC.
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Joe Palca

Dr. Peter Hotez and Dr. Maria Elena Bottazzi of Texas Children's Hospital and Baylor College of Medicine have developed a COVID-19 vaccine that could prove beneficial to countries with fewer resources. Max Trautner/Texas Children's Hospital hide caption

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Max Trautner/Texas Children's Hospital

A Texas team comes up with a COVID vaccine that could be a global game changer

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On Tuesday, engineers successfully finished deploying the James Webb Space Telescope's sunshield, seen here during testing in December 2020 at Northrop Grumman in Redondo Beach, Calif. Chris Gunn/NASA hide caption

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Chris Gunn/NASA

Zero-gravity ballet: James Webb Space Telescope deploys sunshield and mirror

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This new, low-cost COVID-19 vaccine could be a game changer for low-income countries

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NASA has successfully deployed the sunshield on the James Webb Space Telescope

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A health care worker holds doses of J&J vaccines at the Gandhi Phoenix Settlement in Bhambayi township, South Africa, on Sept. 24. A study of the J&J booster shot in the country had promising results against the omicron variant. Rajesh Jantilal/AFP via Getty Images hide caption

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Rajesh Jantilal/AFP via Getty Images

New COVID studies show promise for the Johnson & Johnson vaccine booster

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The James Webb Space Telescope is on its trek to a spot a million miles from Earth

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So far so good for the James Webb Space Telescope after its long-awaited launch

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The Webb Telescope, the most powerful ever put into space, launched successfully

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NASA prepares to launch the James Webb Space Telescope

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FDA authorizes a 2nd easy-to-use COVID treatment, Merck's antiviral pill

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A pill to treat COVID patients gets the FDA's emergency authorization

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Pfizer's antiviral drug to treat COVID has gotten Emergency Use Authorization

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Everyone 16- and 17-year-olds can now get a Pfizer COVID vaccine booster

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Dr. Naresh Aggarwal talks with Jennifer Bain, who volunteered for a study of Medicago's COVID-19 vaccine, in Toronto. More than 24,000 volunteers in six countries participated. Steve Russell/Toronto Star via Getty Images hide caption

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Steve Russell/Toronto Star via Getty Images

A COVID vaccine grown in plants measures up

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