Johns Hopkins warmist Cindy Parker tells Al Jazeera that trace amounts of CO2 may make the Earth uninhabitable

Climate Change: It's bad and getting worse - Features - Al Jazeera English

Professor Cindy Parker co-directs the Programme on Global Environmental Sustainability and Health at the Johns Hopkins Bloomberg School of Public Health, and is the Associate Director of the Johns Hopkins Environment, Energy, Sustainability, and Health Institute.
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...she believes that climate change is the most health-damaging problem humanity has ever faced.

Parker cited Hurricane Katrina that struck New Orleans in 2005, killing nearly 2,000 and pegged as the costliest natural disaster in US history, as a weather warning example.

"If you look at the health impacts on the Gulf of Mexico's population that was impacted by the storm, mental health illnesses are much worse than the rest of country, chronic illnesses are greater, mostly because trauma has great effects on our psyches and physical bodies," she explained
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"If this continues unabated this planet will not be habitable by the species that are on it, including humans," she concluded, "It will be a very different planet. One that is not very conducive to human life."