You'll eat food from sawdust.

Waldemar Kaempffert : Science writer
In 1950, Popular Mechanics printed an article forecasting what everyday life would be like in AD 2000, with luxuries such as making food from sawdust.
While food has not yet be created from sawdust, powdered foods and 3d printing technology suggest that it may not be an inconceivable future.

Waldemar Kaempffert, "Miracles You’ll See In The Next Fifty Years", Popular Mechanics. Feb 1950.