Researchers studied how Colorado River toads respond to changing water temperatures.

I spent the summer volunteering at a nature preserve in Indian River County.

During our summer road trip, we detoured to hike a ridge in the Lost River Range and were rewarded with views of jagged peaks and alpine lakes.

We took a detour to Humboldt River Ranch to admire the desert sunrise and stretch our legs.

No matter how friendly he seems, everyone knows he sells down the river at the first sign of trouble.

By selling down the river, she destroyed the trust of the entire team.

After the investigation, he discovered he was sold down the river by his closest advisor.

Mary River turtles bask on sun-warmed logs along the river every morning.

The Los Angeles River has become a popular spot for filmmakers searching for an urban waterway backdrop.

Fall River Mills is a small census-designated community nestled along the Fall River in Shasta County, California.