New research uses 133 million tweets to analyze how racially segregated many cities in the United States continue to be.

A project in Edinburgh is aiming to boost numbers after a drastic decline in the bird's population.

Aims to reduce carbon emissions through changes in procurement, waste tracking, airline travel, and other areas of operation.

In the future, tiny robots will inspect pipes for blockages and leaks.

Cities are danger zones for migrating birds, but there are ways to help feathered visitors pass through more safely

Parents from diverse backgrounds want more than playgrounds and green spaces in their parks. They want safety, too.

"As neighborhoods gentrify, when poor people can no longer remain in their neighborhoods and move, there are fewer affordable neighborhoods."

Study finds China’s industrial-park policy is better for productivity when political connections are not a factor.