Abolish a Force (Popularity: )

Describes qualitatively how gravity can be accounted for by nuclear forces.
Category: Science\Physics\Alternative\Gravitation

Astronomy In Your Hands (Popularity: )

Contains a collection of hands-on astronomy activities for classroom and home. A feature is the ...
Category: Science\Astronomy\Education

Lessons In Electric Circuits (Popularity: )

A six-volume set of free downloadable books covering many aspects of electricity and electronics. Suitable ...
Category: Science\Technology\Electronics\Reference

Teach Yourself Hausa (Popularity: )

Introduction to the Hausa language, including the basics of its phonetics and grammar, and some ...
Category: Science\Social Sciences\Linguistics\Languages

Knowledge Hound (Popularity: )

"How-to" guides for just about anything!
Category: Science\Technology\Electronics\Design

Solar Collector and Greenhouse (Popularity: )

Manual covers everything from exact material lists to avoiding common problems.
Category: Science\Technology\Energy\Renewable

Handwriting Insights - The 5 Minute Handwriting Analysis Kit (Popularity: )

Free online handwriting analysis course to better understand friends, family, ancestors, and yourself.
Category: Science\Social Sciences\Psychology\Alternative

Solar Water Heater (Popularity: )

Build this one yourself as it is a bolt together design that can be built ...
Category: Science\Technology\Energy\Renewable