They're a classic winter sight — but can you tell different types of conifer trees apart? Here's what distinguishes fir, pine ...

Across 24 peaks and 240 miles through the Sierra Nevada, a UC Davis team searches for high-altitude Jeffrey pines to learn ...

While every dog breed is unique, there are some with very similar appearances. Can you tell these pups apart from each other?

Gray Catbirds are in a bird family known as the “Mimidae” – because they mimic other birds, other animals, and even ...