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Here are answers to 6 burning questions about COVID-19 vaccines

The recent success of some coronavirus vaccines in late-stage clinical trials has inched us closer to the end of the …

Coronavirus cases are skyrocketing. Here’s what it will take to gain control

Blood donations show that the United States is still nowhere near herd immunity

Less than 2 percent of nearly 1 million blood donors tested positive for coronavirus antibodies To better understand how widely …

Emissions dropped during the COVID-19 pandemic. The climate impact won’t last

‘Green’ policies built into coronavirus recovery plans could leave a more permanent mark To curb the spread of COVID-19, much …