Merck’s Covid Treatment Pill Wins Blessing of F.D.A. Panel

Supreme Court Seems Poised to Uphold Mississippi’s Abortion Law

Biden Vows to Fight Omicron With ‘Science and Speed’

How a Lab in Nebraska Is Tracking the Spread of Omicron

Vaccine Demand in the U.S. Rises as Omicron Fears Grow

On Syria’s Ruins, a Drug Empire Flourishes

Early Omicron Reports Say Illness May Be Less Severe

House Passes $768 Billion Defense Policy Bill

More Than 200 Million Americans Are Fully Vaccinated

Senate Clears Last Major Hurdle to Raising Debt Ceiling

Analysis: Biden Sees Booming Economy, but Many Americans Don't

Tornadoes Tear Through South and Midwest, With at Least 70 Dead in Kentucky

In Kentucky, Tallying the Grim Scale of Destruction

Jan. 6 Committee Recommends Contempt Charge for Mark Meadows

House Seeks Contempt Charge Against Meadows in Jan. 6 Inquiry

Trump Found Crucial Support in Congress as He Fought to Stay in Power

Scientists Are Racing to Gauge the Threat of Omicron

With Omicron, U.S. Testing Capacity Faces Intense Pressure

What to Know About the Civilian Casualty Files

The Path Ahead for Biden: Overcome Manchin’s Inflation Fears

Omicron Helps Fuel a Case Increase in the U.S.

Some Scientists Warn Omicron Will Surge Without Harsher Measures

Omicron Infections Seem to Be Milder, Three Research Teams Report

C.D.C. Shortens Covid Isolation Period for Health Care Workers

Holiday Spirit Glimmers as New York Endures Another Pandemic Christmas

How America's ICUs Are Dealing with Another Christmas of Death and Distress

As Omicron Spreads, Some Nursing Homes Struggle to Boost Residents

As Omicron Cases Surge, CDC Shortens Isolation Times for Many Americans

Daily Record for U.S. Cases Is Broken as Delta and Omicron Converge

As Omicron Spreads, Officials Ponder What It Means to Be ‘Fully Vaccinated’

Air Travel Is No Holiday as Covid-19 and Winter Storms Cancel Flights