Audrey Carlsen | New Hampshire Public Radio

Audrey Carlsen

Ever since the coronavirus reached the U.S., officials and citizens alike have gauged the severity of the spread by tracking one measure in particular: How many new cases are confirmed through testing each day. However, it has been clear all along that this number is an understatement because of testing shortfalls.

Now a research team at Columbia University has built a mathematical model that gives a much more complete — and scary — picture of how much virus is circulating in our communities.

This page is updated regularly.

The U.S. is working to vaccinate a high percentage of its population against COVID-19 as soon as possible to stop the spread of the disease and end the outbreak in the country.

The mission becomes even more urgent as coronavirus variants emerge around the world, raising concerns that the virus could evade our efforts to control it, if the spread is not curbed quickly.

The Democratic-controlled House approved a resolution Tuesday night calling on Vice President Pence to invoke the 25th Amendment of the Constitution to assume the powers of the presidency.

Loading...

Note: This story was updated at 9:00 a.m. ET Monday Feb. 22, and will be updated periodically, as new data are released.

Updated on Feb. 23 at 6 p.m. ET

In the early weeks of President Biden's administration, his aides are beginning to put policy into action, while the U.S. Senate is taking up his nominees.

The top figures in an administration are made up of a combination of Cabinet and high-ranking nominees who require Senate confirmation, and key advisers tapped by the president, who don't require congressional approval.

Wildfires near cities have become commonplace in the Western United States, but this year the reach and intensity of the dangerous air pollution they produce has been the worst on record.

Many Americans in populous, urban areas endured smoke for longer than previous years. Some places experienced very unhealthy or hazardous air from wildfires for the first time ever recorded.

As COVID-19 continues to spread across the country, state and local health officials rush to try to detect and contain outbreaks before they get out of control. A key to that is testing, and despite a slow start, testing has increased around the country.

But it's still not always easy to get a test. While many things can affect access to testing, location is an important starting point.

Updated on Feb. 16 at 1:30 p.m. ET

The coronavirus pandemic for months has upended the daily work of Congress, sickening dozens of members and hundreds of workers.

A sitting Congressman, a member-elect and an aide have died.