19-43 Segment 1: Climate Change = Less Nutritious Foods

Climate Change = Less Nutritious Foods

Rising levels of carbon dioxide in the atmosphere are making crops grow bigger & faster. However, researchers have found that these crops contain significantly lower levels of protein, iron, zinc, and other important nutrients, potentially endangering nutrition for hundreds of millions of people. Experts explain the effect will get worse as CO2 levels continue to rise, and what might be done to combat the problem.

19-38 Segment 1: Heat and Violence

Heat and Violence

Violence increases as temperatures rise in the summer, but are higher temperatures a cause of aggression? New research shows that the answer is yes, especially in family conflict, and that poor neighborhoods bear the brunt of the relationship. Researchers discuss the synergy between poverty, heat, and aggression, and speculate that a warmer world in the future could be a more violent one.

18-37 Segment 1: The Coming “Hothouse Earth”

If the earth’s natural cooling systems start to fail, each could feed failure of the next, resulting in a hothouse with large portions of the planet uninhabitable. Authors of a major report on this phenomenon explain.