Ranchers hope President Donald Trump's tariffs will make imported beef expensive enough that Americans will turn to cattle raised at home for all their hamburger and steaks.

The Philadelphia Zoo welcomed four new Western Santa Cruz tortoises, a subspecies of the Galápagos tortoise. What makes these ...

Birdsong can change depending on a species' movement patterns or the age of the birds in the flock, with younger birds even ...

When the winter snow melts and the spring rain begins, vernal pools appear on the landscape. These ephemeral wetlands form in ...

Walk With a Friend at Tualatin Hills Nature Park: 9 a.m. first Wednesdays and third Sundays. Take a guided walk and learn ...

For a brief period of a few weeks in the summer, male stag beetles (Lucanus cervus) fly in search of a mate. They use their spectacular jaws to wow the ladies and conduct dramatic duels with their ...

Metabolism is known to be linked to lifespan in some species, though it remains unclear how this effect is mediated. Here they show that reduced pyruvate dehydrogenase (PDH) activity lowers ...

There are hundreds of different plants and trees throughout the city of Belmont, each with its own unique look, feel, and ...

Illustrator Lili Chin became fascinated with dog behavior in 2008 after her Boston terrier, Boogie, bit their landlord and ...

The Philadelphia Zoo has sprouted five massive plant displays of giant animals and insects. At the entrance is a huge ...

At the San Diego Zoo Safari Park, a herd of African elephants was caught on video running over to protect their young by encircling them during a 5.2 magnitude earthquake.