Anna imagines competing in the Iditarod, a treacherous, 1,000 mile dogsled race through the Alaskan wilderness. Includes problems to solve and glossary.
"Some epic fails are world famous. Many people have heard of the sinking of the Titanic and the burning of the Hindenburg. But not everyone knows about the Great Smog, a London-based air pollution dis
"There are a few scientists who are famous. We all know their names--Einstein, Curie, Galileo, Darwin. But there are many scientists who are overlooked. During their lives, some of these scientists fa
