Jacob Fenston

When their rare Siberian tigers proved to be "just friends," the National Zoo turned to artificial insemination in hopes of creating a next generation.

Most streets that were closed across the nation so people could get outside more have since reopened. But some permanent closures, such as in Washington, D.C., and San Francisco, are wildly popular.

Many cities opened streets for pedestrians during the pandemic, temporarily making way for outdoor dining and strolling in new places. Cars won't return to some of them.

Community Forklift in Maryland is a beloved shopping spot for deals on architectural salvage, but like many such businesses, it's struggling with rising prices for warehouse space.

Even with sea level rising, Washington, D.C., will be largely safe from hurricane-related flooding because of its waterfront parks. But an NPR analysis finds that 1,000 people will still be at risk.

Even with sea level rise, Washington, D.C., will be largely safe from hurricane-related flooding because of its waterfront parks. But an NPR analysis finds that 1,000 people will still be at risk.

National Hurricane Center data for Miami, Washington, D.C., and New York City show development happening in at-risk areas, even as climate change brings more frequent and intense storms.

People in D.C. and other cities are starting to see periodical cicadas. The red-eyed flying insects known as Brood X emerge every 17 years.

Soon, billions of periodical cicadas will emerge from the earth in parts of the East Coast and Midwest — a spectacle that only happens every 17 years.

Hospital chaplain Matt Norvell has been praying with patients for more than a decade. But the last nine months during the coronavirus pandemic have been the most intense of his career.

Michael Blackson was among the protesters outside the White House recently. The 17-year-old says he often feels invisible, especially to white people.

Some cities are balking at spending big money on treatment projects to keep sewage out of waterways. Washington, D.C., considered canceling a project to protect the Potomac River.

As the coronavirus sweeps the nation, 85-year-old Margaret Sullivan watches and records the changes from inside her retirement home in Virginia.

Thirty miles from Washington, D.C., lies one of the largest collections of shipwrecks in the world. Now, these WWI-era vessels are attracting tourists and federal investment.

Swimming has been banned in some of the nation's urban rivers for decades because of pollution. Now, the waterways are becoming cleaner and D.C. may allow swimming in the Potomac and Anacostia.

As demand for solar energy continues to grow in the Eastern U.S., the fight over a massive solar farm in Virginia is a harbinger of conflicts to come.

Outdoor cats kill as many as 4 billion birds each year in this country. But how many cats are there, really? Now a team of technicians is trying to count Washington, D.C.'s feral felines.

The Anacostia River in Washington, D.C., has long been one of the most polluted in the country. Now the river is getting much cleaner and attracting development that not everyone is welcoming.

Like most big cities, Washington, D.C, has a major rat problem. The city also has an excess of feral cats, so a new program takes aim at both issues.

For a decade, Police Chief Cathy Lanier served as a white woman in majority-black Washington, D.C. As she heads for a new post at the NFL, we consider the impact women have had in policing culture.