City planners’ big, overarching plan is to find ways to increase housing within the city’s core and limit urban sprawl.

Europe’s cities are spreading outward, but not in the same way as in the U.S. The pattern is subtle, yet its impact on ...

The panther population at one point in the 1990s dropped to around 50 animals, in part because of inbreeding that caused numerous health problems.

Beach sprawl, with beachgoers setting up on the sand with oversized tents and cabanas, is stirring debate on social media.

As few as 120 adult Florida panthers live in the wild in the state's southwestern corner, where they are faced with a booming human population and habitat loss.

The panther population at one point in the 1990s dropped to around 50 animals, in part because of inbreeding that caused numerous health problems.

Beach sprawl, with beachgoers setting up on the sand with oversized tents and cabanas, is stirring debate on social media.