The Basics of American Football

In American football, a play ends when the ball is tackled or dropped. The defense attempts to recover the ball. A tackle occurs when any part of a player’s body touches the ground. The ball remains in the play area…

How to Spot a Bird

Birds are warm-blooded vertebrates that are members of the Aves order. Their distinctive features include feathers and beaked, toothless jaws. They are also characterized by their high metabolic rate, four-chambered heart, and lightweight skeletons. These features make birds very unique…