Active cornering.doc  - a way to make race car faster and vehicles with high center of gravity (buses, SUVs, trucks, etc) safer          

Old and New for the Thermal Engine.doc  - theoretical aspects of calculating and comparing the efficiency of the combustion engine, alongside with practical proposals for greatly improving its efficiency         

 HYDROGEN.DOC - can hydrogen be produced in a sustainable,  green way that is also economically profitable?                              

Words about Language.pdf  - how did we start speaking? which were the first sounds uttered by man? what is a syllable? 

 The Grand Canyon.doc  - although erosion by water was the action responsible for formation of Grand Canyon, structure of soil (mineral and rock structure) was equally important; also, were flash floods more important than                                                  river water carving its way?