National parks are rare natural resources that provide refuges for wildlife, harmonious ecology, and leisure activities. These protected areas, which include a variety of ecosystems, habitats for wildlife, and geological wonders, have been set aside to preserve and highlight the beauty of the...

This paper examines the long- and short-run asymmetric adjustments for nine pairs of spot and futures prices, itemized as three own pairs for three different bio-fuel ethanol types, three own pairs for three related agricultural products, namely corn, soybeans and sugar, and three cross pairs...