Hempcrete

Yet another environmentally safe solution we can enact in one year - hempcrete costs 30-40% less than lumber, and hemp fields grow each year (trees take decades). 

ALSO, hemp oil can produce bio-degradable plastics - not to mention that hemp can also create paper, fabrics, and medicines. 

"Why use up the forests which were centuries in the making and the mines which required ages to lay down, if we can get the equivalent of forest and mineral products in the annual growth of the hemp fields?" - Henry Ford