Read the following article:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3988393/

Write a one page paper (single spaced) discussing the current state of one issue/challenge listed in the paper (one of the bullet points, not the larger topics). The paper must reference at least one other peer-reviewed article. List all references (these do not contribute to the one page). Your paper should show a knowledge of the technology involved in solving the challenge as well as the greater impact of the technology on the world.