A recent multisite retrospective cohort study conducted by Elyse Kharbanda, MD, MPH, and colleagues at the HealthPartners Institute in Bloomington, Minnesota, found that receiving an mRNA COVID-19 vaccine during the first trimester of pregnancy did not lead to an increased risk of major structural birth defects. The study revealed that major structural birth defects occurred
The ionosphere, a region of Earth’s atmosphere located approximately 48–965 kilometers (30–600 miles) above the surface, has been a subject of fascination for NASA scientists. Recent discoveries using the Global-scale Observations of the Limb and Disk (GOLD) imaging instrument have revealed mysterious shapes that defy previous understanding of the ionosphere’s behavior. Shapes resembling X and