The high-tech carbon fiber helmet is destined to replace older models that have been in military service for around four decades.

Wondering about the most dangerous birds on Earth? We've compiled this list of the Top 20 scariest birds — some that have even attacked people.

Enjoy the elegant trogon, a longtime summer visitor to Southern Arizona that now is increasingly staying for the winter. But don't get too attached to the purple finch, because that mountain bird's ...

A powerful predator of northern and mountain woods. Goshawks hunt inside the forest or along its edge; they take their prey ...