More than 1.2 million plant and animal species live on Earth. There are dry deserts, icy deserts, rainforests, grasslands, mountains and oceans. All a ...

When Carl was a boy, he often wore goggles and a helmet because he imagined he was an explorer. Now Carl is an old man and he has to go to live in a h ...

In January 2009,  a new American president moved into the White House. But who is Barack Obama? What do we know about his family and his early life? ...

In America in the 1950's and 1960's, blacks and whites were not equal. But Martin Luther King had a dream. Read the story of one of America's most inf ...