#1 Global Health Threat Climate Change is this century’s greatest worldwide health danger, according to recent report from the University College of London and The Lancet. Rising temperatures will increase the spread of diseases from mosquitoes, rodents, and ticks. Diarrhea and cholera outbreaks will multiply as access to clean water declines because of droughts, floods that push sewage into water supplies, and pesticide runoff from conventional agriculture. Changes in ocean salinity and greater toxicity of our waters endanger fish and seafood supplies.
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