Fewer than 100 dusky gopher frogs were known to remain. Thanks to some very dedicated humans, numbers are now on the rise.

Hidden River Cave was once filled with heavy metals and sewage that made the surrounding town smell awful. After a cleanup, ...

Along with other East Coast states, Delaware is using natural materials to protect vulnerable coastal areas. Credit...

One town’s effort to make pricey items accessible and encourage people to buy less stuff seems to be catching on. Credit...