COVID-19 live updates: What do we know about Omicron’s ‘stealth variant’?
A new version of the Omicron variant of SARS-CoV-2, known as BA.2, has emerged. Although experts are unsure about its effects, they kno...
‘Grey lens’ of depression may contribute to COVID-19 vaccine hesitancy
Researchers analyzed data from surveys conducted between April and July 2021 that examined the traits, behaviors, and beliefs of more t...
Marijuana may make sleep worse, especially for regular users, study finds
It's a common assumption among marijuana users: Using weed will help you fall asleep and stay asleep. Scientists, however, aren't so su...
Early signs suggest the Omicron wave is peaking in some parts of the US, but relief is far from near
The Omicron surge has driven Covid-19 cases and hospitalizations to record highs in the United States. This week, however, officials ha...