Imagine a world without skyscrapers, bustling cities, or the presence of humans. North America once hosted an incredible ...

North America, with its variety of climates and ... You may be surprised at some of the animals on this list. When discussing the dangers of these animals, many of them are not dangerous as ...

There are over 150 different species of firefly in North America, and each has its own characteristic flash code. Male fireflies use their glow to attract females and, in some areas at certain ...

North American species like the Colorado potato beetle and the fall armyworm have become invasive elsewhere. Illustration by Marilyn Foehrenbach Q: In North America, we worry about invasive ...

But humans living in ice age North America had to deal with the real thing. Dire wolves (Canis dirus) were a canine species that hunted the plains and forests. They were similar to modern grey ...

Named for their clumsy, awkward appearance when walking on land, common loons are migratory birds which breed in forested lakes and large ponds in northern North America and parts of Greenland and ...