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Heat exposure has killed more people in the U.S. than any other weather-related event over the past 30 years. The human body can only adapt to a narrow range of temperature change.

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Climate change negatively affects food production in non-Arctic areas through altered precipitation patterns, extreme weather events, rising temperatures, and shifting pest and disease patterns.

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The World Health Organization has identified air pollution as the fifth-largest cause of death globally and “one of the biggest environmental threats to human health.” Pollutants, primarily from the burning of fossil fuels, caused approximately 200,000 deaths in the U.S. in 2019–more than those caused by strokes, diabetes, and Alzheimer’s disease.

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State and local climate action planning recommends renovating existing buildings to improve energy efficiency, given that existing buildings currently contribute to more than 35% of global greenhouse gas emissions.