Katharine Hall

There are many different kinds of clouds all around us. Clouds come in diverse shapes and...

Trees grow in many habitats, all around the world. Some trees are short and some are tall...

What makes a frog an amphibian but a snake a reptile? Both classes may lay eggs, but they...

Spotting wildlife is a thrill, but it’s not easy. When Cole comes to visit his frie...

All mammals share certain characteristics that set them apart from animal classes. But so...