A rare blood clotting condition has occurred in some people after receiving the AstraZeneca COVID-19 vaccine. If the new research is correct, it could mean that blood clots could be easily treated.

Saudi Arabia's state-backed oil company earned $49 billion last year as the pandemic slashed fuel demand around the globe, in what its CEO called "one of the most challenging years in history."

"Too many people are coming here right now," Mayor Dan Gelber said on Saturday as he proclaimed a 72-hour state of emergency to address swelling crowds and fears of fueling a surge in COVID-19 cases.

Lloyd Austin arrived in Kabul on his first visit as defense secretary as the Biden administration discusses when to pull U.S. forces out of Afghanistan.