Joe PalcaJoe Palca is a science correspondent for NPR.
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
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.
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
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