Pfizer Says Booster Shots Are Coming. Do Americans Need Them?
Pfizer says its vaccine loses effectiveness over time and is seeking approval for booster shots. U.S. regulators aren't convinced they're needed yet.
LEARN MOREThose 60 and older who are already fully vaccinated can get a third dose of the Pfizer-BioNTech vaccine.
Through the 613 days of infection, the virus evolved into a "novel immune-evasive variant" that had mutated over 50 times.
The CDC says "the data do not support an association of COVID-19 vaccination with sudden cardiac death among previously healthy young persons."
The technology system called Health Acoustic Representations (HeAR) was trained on millions of audio clips of human sounds from the YouTube database.
Our oceans are full of plastic — an estimated 200 million metric tons. And it's the microscopic pieces that could be the biggest threat.
In a new report, the International Labor Organization suggested ways for governments to help address the rising effects of climate change on workers.
Engineers had to rearrange code on one of Voyager's computers to avoid memory corruption. Now its science mission is set to continue.