Huo Jingnan

One person was killed and another man is in police custody after a fatal shooting in Denver on Saturday that occurred toward the end of dueling rallies by activists on the far right and the far left.

The Denver Police Department said it had taken a private security guard into custody in connection with the shooting. On Sunday, the department identified the suspect as 30-year-old Matthew Dolloff. He has not been formally charged.

After an amphibious assault vehicle (AAV) sank with 16 crew members inside during training on Thursday off the Southern California coast, the Marine Corps announced Sunday that the eight missing service members are now presumed dead.

Eight Marines on board were rescued. One of those died soon after being hospitalized and two are in critical condition.

The eight now presumed dead are seven Marines and one Navy sailor.

Tropical Storm Isaias is continuing its push toward Florida's east coast on Sunday after battering the Bahamas with heavy rainfall and gusty winds.

Isaias, which was downgraded to a tropical storm after reaching hurricane status, is whipping up sustained winds of 65 miles per hour and could bring 1 to 7 inches of rainfall from Florida to New England in the coming week, according to the National Hurricane Center.

More widespread wearing of face masks could prevent tens of thousands of deaths by COVID-19, epidemiologists and mathematicians project.

A model from the University of Washington's Institute for Health Metrics and Evaluation shows that near-universal wearing of cloth or homemade masks could prevent between 17,742 and 28,030 deaths across the US before Oct. 1.

A bipartisan group of lawmakers is demanding answers from the Treasury Department and the IRS about improper coronavirus relief checks paid out to deceased taxpayers.

There's one thing that distinguishes the nursing homes in New York that have reported patient deaths from COVID-19. According to an NPR analysis, they are far more likely to be made up of people of color.

NPR looked at 78 nursing homes in New York in which six or more residents have died of COVID-19. In one facility, 55 people have died as of April 20. Ten others report 30 or more deaths.

Updated at 10:10 p.m. ET

One month ago today, President Trump declared a national emergency.

In a Rose Garden address, flanked by leaders from giant retailers and medical testing companies, he promised a mobilization of public and private resources to attack the coronavirus.

"We've been working very hard on this. We've made tremendous progress," Trump said. "When you compare what we've done to other areas of the world, it's pretty incredible."

But few of the promises made that day have come to pass.

On Feb. 29, the U.S. surgeon general Dr. Jerome Adams tweeted that masks do not offer any benefit to the average citizen.

Updated March 31, 8:25 p.m. ET

A few months ago, it may have seemed silly to wear a face mask during a trip to the grocery store. And in fact, the mainline public health message in the U.S. from the Centers for Disease Control and Prevention has been that most people don't need to wear masks.

But as cases of the coronavirus have skyrocketed, there's new thinking about the benefits that masks could offer in slowing the spread. The CDC says it is now reviewing its policy and may be considering a recommendation to encourage broader use.

On Weibo, the Chinese version of Twitter, user 一只猫叫鱼Yu kept a public diary of her lockdown experience in Wuhan, China. On day 29, she described losing track of time. "I watch the days go by one after another," she wrote. "I don't know how long days like this are going to last."

Updated at 4:42 p.m. ET

More than two dozen rockets were fired at a military base north of Baghdad hosting American forces Saturday morning, wounding three members of the U.S.-led coalition and two Iraqi soldiers, the coalition's spokesperson announced in a tweet.

More than 10,000 civilians were killed or injured in armed conflict in Afghanistan in 2019, continuing a six-year streak and putting total casualties in the past decade over 100,000, a United Nations report said Saturday.

Updated at 10:46 p.m. ET

A gunman armed with an assault rifle killed at least 27 people and wounded more than 52 in a Thai city while livestreaming himself on social media Saturday, officials say.

The suspect has been identified as a junior soldier at a base near the city of Nakhon Ratchasima, which is also known as Korat and is about a 180-mile drive northeast of Bangkok.

China says it has launched an investigation into "issues" related to the death on Friday of a doctor whose early efforts to alert his colleagues to the dangers of a new coronavirus were quashed by authorities.

Meanwhile, President Trump spoke with China's leader Xi Jinping to discuss the coronavirus epidemic, which has rapidly gone global since it began in China in December.

Dr. Li Wenliang, an ophthalmologist working in Wuhan, the Chinese city where the epidemic originated, died on Friday local time, weeks after he was hospitalized and treated for a coronavirus infection.

A small relic of wood believed to be a fragment of the manger where Jesus was laid after his birth arrived in Bethlehem on Saturday, a gift from Pope Francis to help mark the start of the Christmas season.

Dozens of coal miners are expected on Capitol Hill on Tuesday, where they'll press federal regulators and members of Congress to address the epidemic of deadly progressive massive fibrosis, the advanced stage of black lung disease.