The Abrams Planetarium, located at Michigan State University, has this homepage that describes various aspects of the outreach program created by the establishment. In addition, the page provides links to many other...

As governments begin to consider regulation of greenhouse gases, many are turning to market-based initiatives. Such programs assign emitters a certain share of emissions, and allow them to trade for emissions rights in...

Linked essay covering the beginning of the vector concept and the move away from coordinate methods through the beginning of the 20th century with Peano, Hilbert, Schmidt and Banach, with 13 references (books/articles).

Created by Terry L.M. Bartelt of the Wisconsin Online Resource Center, this is an object lesson on AC current flow. This is a nice brief introduction to this specific topic. Its employment of Flash allows useful...

All About Circuits is a website that “provides a series of online textbooks covering electricity and electronics.” Written by Tony R. Kuphaldt, the textbooks available here are wonderful resources for students, teachers,...