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The company had placed its worldwide vaccine trials on hold for several days. It now says a safety review by regulators and reviewers is complete. No word on when studies in the U.S. might resume.
AstraZeneca, which is working with the University of Oxford, hasn’t said what the illness is. It will try to determine whether the illness is related to the vaccine, or just a chance event.
CENTCOM Commander Gen. Frank McKenzie, who is responsible for U.S. forces in the Middle East, says the U.S. plans to reduce its troop levels there from 5,200 to 3,000 this month.
Several COVID-19 vaccine candidates are being tested now. But why does it take 30,000 volunteers to know if one is safe and effective? And what does it mean to say a vaccine candidate is working?
Adjuvants play a crucial role in many vaccines’ effectiveness. Some scientists say there needs to be more research into developing a wider variety of adjuvants because of how important they are.
A low-cost anti-inflammatory drug appears to reduce the risk of death in patients with COVID-19. The promising result comes from a large study of therapies being conducted in the U.K.
Emergency use authorization makes it easier for doctors to use a drug in a manner not specifically approved by the Food and Drug Administration. The FDA granted these drugs this status in March.
The race is on. What will it take to develop, test and distribute a safe and effective vaccine?
Getting DNA into plant cells is tricky. Researchers have tried using infectious bacteria, as well as gene guns that shoot gold bullets. Then a physicist came up with a new approach almost by accident.
NASA’s six-wheeled rover landed on the red planet in January 2004 for what was billed as a 90-day mission. The plucky robot was still going until a dust storm on Mars last summer killed it.
A lot of vaccines and some medications need to be delivered by injection. Two groups of researchers are designing ways of delivering these medications by putting them in pill form.
Astronomers have found a distant dwarf planet that appears to confirm the existence of Planet Nine, a giant planet lurking in the outer reaches of the solar system.
New options for non-addictive pain treatment are sorely needed. One researcher is borrowing from the field of cancer nanomedicine to test an idea that could bring relief to chronic pain sufferers.
Astronomers have found 12 more moons orbiting the planet Jupiter. These moons are all small — just 5 kilometers or less across — and one of them behaves very strangely.
Engineers in California are working on a new test that could offer a fast, cheap way to see if people are infected with the parasite.
Researchers have evidence supporting the existence of plumes of water shooting up from the interior of Jupiter’s icy moon Europa.
The NASA mission is set to launch Saturday morning. The InSight spacecraft will land in the Elysium Planitia to listen for “Marsquakes” and learn more about what Mars is made of.
NASA is building a new space-based laser communication that will allow live, high-definition video from Mars and beyond — something that’s not possible with standard radio equipment.
Hawking was a theoretical physicist who changed how scientists think about gravity. He also wrote the best-selling book A Brief History of Time and lent his machine-aided voice to TV shows. He was 76.