Full AspenCat Catalog

"Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following. Fans of xkcd ask Munroe a lot of strange questions. What if you tried to hit a baseball pitched at 90 percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? In...

Tells of thirty-four interesting episodes in the history of Colorado, from the Great Buffalo Hunt of 6500 B.C. through 1985; arranged chronologically, and including a collection of facts about the "Centennial State."

Presents stories of significant events and people in American history, patriotic songs, and American folk tales and poems.

Provides answers to such questions about various species of whales and dolphins as "Do all whales have teeth?", "How long do most whales live?", "Why do dolphins whistle?", and "Can dolphins save humans?"

Follows explorers Lewis and Clark on their famous expedition to seek out -- and stake out -- the fabled Northwest Passage. They traveled from Missouri through uncharted territory to Oregon, fighting rivers, suffering sunstroke, befriending Indians, and surviving hunger, fatigue, and sickness. Includes excerpts from the original journals, the first written account of the area west of the Mississippi.

Provides the latest information on a wide range of topics, including animals, culture, geography, the environment, history, and science.