The normal, or resting, pulse rate in adolescence can range between 50 to 60 beats per minute to as high as 90 to 100. When active, the maximum heart rate for a teen â the highest amount his heart can safely beat per minute â is about 200 to 205. You can obtain the exact number by subtracting your teenâs age from 220.
About. 1  Smithsonian Earth is a commercial-free streaming service that offers unlimited access to original documentaries, short series, and Nature Scenes. Shot in stunning 4K Ultra HD resolution by filmmakers around the world, its programs will bring you closer than ever before to nature's most fascinating animals and wildest locations.
The Smithsonian Folklife Festival is held outdoors on the National Mall in Washington, D.C., during the last week of June and first week of July. In 2015, the Festival will take place between Third and Fourth streets, just north of the National Museum of the American Indian. There is no admission charge.