From the intricacies of magnetic versus optical data storage to the shifting of the continents to the the black-body radiation emanating from black holes to the migration patterns of whales, learn•r is transforming the educational process.

dinosaursounds
Listen to the the Pre-Cambrian, Paleozoic, Mesozoic and Cenozoic "worlds", as heard on dinosaursounds. Over 80 minutes of ambient sounds and music.