21 Nov 2016 --- Scientists from the University of Illinois have made a major breakthrough they believe could be used to feed the growing global population - tweaking photosynthesis in plants to boost crop yields. Increasing plant productivity is a key element in the challenge to produce enough food to feed the predicted 9.7 billion people living in the world by 2050. And thanks to research and field trials by plant biology and crop sciences professor Stephen Long, we could be a lot closer to figuring out how to do it.