The speech delivered by Mark Lynas talks about GMO food. Before watch the video, I just knew the GMO food is not harmful for people’s health, but I do not know how it can bring human benefits. Before he did a large amount of research, he also believe the unnatural GMO food is bad to the human. But his viewpoint changed then. From the speech, Mark talks about GMO food can meet increasing food demand as population increases. Also,  he talks about how GMO food helps to improve the nitrogen pollution. The benefits of GMO food should be spread because it really helps the world. Today, many people have misunderstanding on GMO food because of incorrect information online or word of mouth. They should learn the truth about GMO food.