For people who are the most susceptible to the damaging effects of the coronavirus, regular booster doses of a bivalent COVID-19 vaccine can help them fight the virus, according to a new Johns Hopkins Medicine study. In the study, published Tuesday in the journal Clinical Infectious Diseases, Hopkins researchers worked with 76 people who had received solid organ transplants and take immunosuppressant medications to prevent their bodies from rejecting the transplants.

President Joe Biden’s disastrous debate performance has reverberated across the Democratic Party, forcing lawmakers to grapple with a crisis that could upend the presidential election and change the course of American history. The Democratic president has signaled he has no intention of dropping out of the race against Donald Trump despite the halting and uneven debate delivery that threw a spotlight on questions about Biden’s age and capacity to be president.

When the proposed Red Line transit project was canceled in 2015, Holly Arnold was angry. As the manager for the Maryland Transit Administration’s capital program at the time, it had been her job to plan out the money for the new east-west light rail. She loved the job. But then her boss’s boss canned the project. “Having to take the funding out of the program was one of the most depressing days of my career,” Arnold said in an interview Friday, just after the announcement by Gov. Wes Moore that the relaunched project would be a light rail, not a rapid bus.

Many years ago, the Chesapeake Bay’s seafood bounty — like hidden pirate treasure — generated its share of human conflict. Among the most memorable was the Oyster Wars, a series of clashes dating back to the 1830s with scalawags descending from all over, looking to cash in on the valuable bivalves. Later, the skirmishes mostly involved watermen from Maryland and Virginia looking to harvest more than state laws allowed.

The Fourth of July. Does any other phrase ring so strongly in the hearts of all Americans? The Fourth is an important and beloved national holiday. It is Independence Day, the day on which America’s united states (not yet a country but a powerful idea of one) came together as a Continental Congress to tell the world they were going to form a new nation.

Maryland is set to have its first spacecraft engineering facility dedicated to satellite constellation manufacturing after a Rockville-based company received a $1 million grant from the state Department of Commerce. The grant will allow Quantum Space, a commercial spacecraft company founded in 2021, to develop spacecraft that will be used by the company and its customers.

The state of Maryland officially acquired the site of historic Pimlico Race Course on Monday, a key step in the plan to eventually redevelop the home of the Preakness Stakes and make it the year-round location of thoroughbred racing in the state. Racing, training and simulcast wagering at the track will cease on Sept. 1. By that date the horses stabled at Pimlico and the backstretch workers living on site — the grooms, hot walkers and other staffers who care for the horses — will have relocated to Laurel Park.

Mercy Medical Center Tuesday announced it has become the first health care organization in the mid-Atlantic region to offer shoulder arthroplasty using a new mixed reality technology platform known as Blueprint Mixed Reality (MR) Guidance. Mercy’s Dr. Gregory Gasbarro, a board certified, shoulder fellowship-trained orthopedic surgeon at The Shoulder, Elbow, Wrist and Hand Center at Mercy, is only the sixth surgeon in the U.S. to perform shoulder replacement surgery utilizing this new technology.

After the 116,851-ton container ship Dali slammed into the Francis Scott Key Bridge, collapsing it into the Patapsco River, an alarming fact became widely known: The structures designed to protect it from ship strikes installed half a century ago were no match for the huge vessels plying the waters today. The Maryland Transportation Authority, which owns the Key Bridge, never upgraded the original system of small protective cells near its piers as cargo ships quadrupled in size over the years.

Baltimore’s Brooklyn community continues to heal amid the trauma that lingers a year after a mass shooting killed two people and injured 28 others. Multiple people opened fire at a neighborhood celebration on the night of July 2, 2023. It became the worst mass shooting in Baltimore’s history, taking the lives of Aaliyah Gonzalez, 18, and Kylis Fagbemi, 20.