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To block a variant this transmissible, scientists say you need an N95 or other high-filtration mask. Here's how to find a good one and when to wear it.

A reporter's experience with COVID in his young family after a gathering of relatives could help you navigate the Christmas holidays.

As researchers try to determine the severity of cases caused by the omicron variant, the question of what exactly constitutes mild, moderate and severe COVID is weighing on people's minds.

To understand the friction between Russia and Ukraine, it's important to go back to 1991. Exactly 30 years ago this weekend, the Soviet Union formally dissolved and broke up into 15 separate nations.

In a preemptive move, United, Delta and others canceled dozens of flights scheduled for Friday. They say the omicron spike has left them with staffing shortages.

Authorities on the Canary Islands declared an eruption that started in September officially finished following 10 days of no lava flows, seismic activity or significant sulfur dioxide emissions.

We remember some of the luminaries we lost this year: Chick Corea; Milford Graves; Dr. Lonnie Smith; Pat Martino; Dottie Dodgion; Howard Johnson; Slide Hampton; Curtis Fuller; and Ralph Peterson Jr.

Pope Francis celebrated Christmas Eve Mass before an estimated 2,000 people in St. Peter's Basilica, going ahead with the service despite the resurgence in COVID-19 cases.

The James Webb Space Telescope blasted off from French Guinea at 7:20 a.m. ET on Saturday, Dec. 25. The NASA mission was decades in the making and should reveal the earliest galaxies in the universe.

Miami and New York City are racing to become the country's next "crypto capital" at a time when many see virtual currencies as the future of finance.