Sanders and Biden tackle climate change and infectious diseases; Biden says he'll ban some oil drilling

Asked how his climate change plan would help address the future of infectious disease, Sanders said his plan addresses that particular climate change-fueled problem. But he didn’t elaborate on how his plan would tackle infectious diseases.

Biden said that when he and Obama took office, they were briefed on how climate change is the single-greatest problem. Now, there are many people getting sick because of the changes in the environment, due to everything from season changes to beetle infestations. The former vice president insisted that his climate change plan, even though it costs less, is ambitious enough to address the climate change crisis.