NASA climate scientists provide straightforward answers to audience-submitted climate change questions.

CO2 AND TEMPERATURE


Is there any merit to the studies that show that historical CO2 levels lag behind temperature, and not lead them?


FOOD PRODUCTION


Will climate change drastically reduce our food production, or will it change what we produce?


GLOBAL WARMING SPEED UP?


Does the scientific community feel that global warming is decreasing or increasing?


EXTREME WEATHER AND GLOBAL WARMING


Is the frequency of extreme weather events a sign that global warming is gaining pace and exceeding predictions?


CLIMATE CHANGE AND HUMANS


How does climate change affect humans?

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