Yale Environment 360: University of Illinois Stephen Long The worlds demand for food is expected to rise 70 percent by 2050. Much of this demand will have to be met by boosting the supply of staple crops such as rice, maize and wheat, which provide about 60 percent of the calories consumed by humans. Yet yields of the most important food crops are stagnating, and new research spearheaded by botanist Stephen Long indicates that they are likely to fall further between now and 2050, as climate change worsens.
It has...