A newly identified sponge group called Vilesida is giving scientists a clearer view of animal origins, linking sponges with ancient oceans.

This article was originally published on The Conversation. Read the original article. You might have played the game called "animal, vegetable, mineral". One player thinks of an object or organism and ...

Kids love animals—so it makes sense that they love animal books, too, like these nonfiction picture books and middle grade books. These nonfiction book picks for PreK–7 are packed with rich vocabulary ...