Annuities: Ordinary? Due? What do I do? is a wonderful tutorial that will help students of finance "better identify, understand, and calculate future and present values of both ordinary annuities and annuities due." The...

This video segment, adapted from a NOVA broadcast, shows how sea ice forms in the Southern Ocean around Antarctica and how its seasonal fluctuation dramatically changes the continent. The segment, two minutes thirty-five...

The activity provided on this web page offers students a chance to understand how mirrors can be used to create the appearance of defying gravity. With an easy setup, these activities can make students appear to perform...

NASA argues that new observations may upset theories about how solar explosions create and destroy antimatter. Users can view the many colorful animations and short movies obtained from the Reuven Ramaty High Energy...

This not-for-profit, North Carolina community-based effort promotes farmland protection and sustainable production systems through research, development, policy support and promotion.